Asus F2A55 M Le Desktop Motherboard Users Manual

Asus-F2A55-M-Le-E8023-Users-Manual-581784 asus-f2a55-m-le-e8023-users-manual-581784

Asus-F2A55M-Le-Owner-S-Manual asus-f2a55m-le-owner-s-manual

E8023_F2A55-M_LE E8023_F2A55-M_LE

F2A55-M LE to the manual 4ad358fe-d7eb-4267-84a9-d4e793e91ee6

2015-01-21

: Asus Asus-Asus-F2A55-M-Le-Desktop-Motherboard-F2A55-M-Le-Users-Manual-236623 asus-asus-f2a55-m-le-desktop-motherboard-f2a55-m-le-users-manual-236623 asus pdf

Open the PDF directly: View PDF PDF.
Page Count: 78

Motherboard
F2A55-M LE
ii
E8023
Second Edition
January 2013
Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.
Offer to Provide Source Code of Certain Software
This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.
Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either
(1) for free by downloading it from http://support.asus.com/download
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location
where you want to have it shipped to, by sending a request to:
ASUSTeK Computer Inc.
Legal Compliance Dept.
15 Li Te Rd.,
Beitou, Taipei 112
Taiwan
In your request please provide the name, model number and version, as stated in the About Box of the
product for which you wish to obtain the corresponding source code and your contact details so that we
can coordinate the terms and cost of shipment with you.
The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
the corresponding binary/object code.
This offer is valid to anyone in receipt of this information.
ASUSTeK is eager to duly provide complete source code as required under various Free Open Source
Software licenses. If however you encounter any problems in obtaining the full corresponding source
code we would be much obliged if you give us a notication to the email address gpl@asus.com, stating
the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).
iii
Contents
Safety information ...................................................................................................... vi
About this guide ........................................................................................................ vii
F2A55-M LE specications summary ....................................................................... ix
Package contents ...................................................................................................... xii
Chapter 1: Product introduction
1.1 Special features ............................................................................................ 1-1
1.1.1 Product highlights ...........................................................................1-1
1.1.2 ASUS Digital power Design ............................................................ 1-1
1.1.3 ASUS Exclusive Features ...............................................................1-2
1.2 Before you proceed ...................................................................................... 1-4
1.3 Motherboard overview ................................................................................. 1-5
1.3.1 Placement direction ........................................................................1-5
1.3.2 Screw holes ....................................................................................1-5
1.3.3 Motherboard layout .........................................................................1-6
1.3.4 Layout contents ...............................................................................1-7
1.4 Accelerated Processing Unit (APU) ............................................................ 1-7
1.4.1 APU installation ...............................................................................1-8
1.4.2 APU heatsink and fan assembly installation ...................................1-9
1.5 System memory .......................................................................................... 1-11
1.5.1 Overview ....................................................................................... 1-11
1.5.2 Memory congurations ..................................................................1-12
1.5.3 Installing a DIMM .......................................................................... 1-17
1.6 Expansion slots .......................................................................................... 1-18
1.6.1 Installing an expansion card .........................................................1-18
1.6.2 Conguring an expansion card ..................................................... 1-18
1.6.3 PCI slot .........................................................................................1-18
1.6.4 PCI Express x1 slot .......................................................................1-18
1.6.5 PCI Express x16 slots ...................................................................1-19
1.7 Jumpers.......................................................................................................1-20
1.8 Connectors .................................................................................................. 1-21
1.8.1 Rear panel ports ...........................................................................1-21
1.8.2 Internal connectors .......................................................................1-23
1.9 Software support ........................................................................................ 1-30
1.9.1 Installing an operating system ......................................................1-30
1.9.2 Support DVD information ..............................................................1-30
iv
Chapter 2: BIOS information
2.1 Managing and updating your BIOS ............................................................. 2-1
2.1.1 ASUS Update utility ........................................................................2-1
2.1.2 ASUS EZ Flash 2 ............................................................................2-2
2.1.3 ASUS CrashFree BIOS 3 utility ......................................................2-3
2.1.4 ASUS BIOS Updater .......................................................................2-4
2.2 BIOS setup program ..................................................................................... 2-6
2.3 Main menu ................................................................................................... 2-10
2.3.1 System Language [English] .......................................................... 2-10
2.3.2 System Date [Day xx/xx/xxxx] ....................................................... 2-10
2.3.3 System Time [xx:xx:xx] .................................................................2-10
2.3.4 Security .........................................................................................2-10
2.4 Ai Tweaker menu ........................................................................................ 2-12
2.4.1 Ai Overclock Tuner [Auto] ............................................................. 2-12
2.4.2 Memory Frequency [Auto] ............................................................. 2-13
2.4.3 APU Multiplier [Auto] .....................................................................2-13
2.4.4 NB Frequency [Auto] ..................................................................... 2-13
2.4.5 EPU Power Saving Mode [Disabled] ............................................2-13
2.4.6 GPU Boost [Auto] .......................................................................... 2-13
2.4.7 OC Tuner ......................................................................................2-14
2.4.8 DRAM Timing Control ................................................................... 2-14
2.4.9 CPU Voltage [Offset Mode] ...........................................................2-14
2.4.10 DRAM Voltage [Auto] .................................................................... 2-14
2.4.11 SB 1.1V Voltage [Auto] .................................................................2-14
2.4.12 1.1Vsb Voltage [Auto] ...................................................................2-15
2.4.13 APU1.2V Voltage [Auto] ................................................................2-15
2.4.14 VDDA Voltage [Auto] ..................................................................... 2-15
2.4.15 DIGI + VRM ................................................................................... 2-15
2.5 Advanced menu .......................................................................................... 2-17
2.5.1 CPU Conguration ........................................................................2-17
2.5.2 SATA Conguration .......................................................................2-18
2.5.3 USB Conguration ........................................................................ 2-19
2.5.4 NB Conguration ........................................................................... 2-19
2.5.5 Onboard Devices Conguration ....................................................2-19
2.5.6 APM .............................................................................................. 2-21
2.5.7 Network Stack ...............................................................................2-22
2.6 Monitor menu .............................................................................................. 2-23
v
2.6.1 CPU Temperature / MB Temperature [xxxºC/xxxºF]...................... 2-23
2.6.2 CPU_FAN / CHA_FAN / PWR_FAN Speed [xxxx RPM] or [Ignore] / [N/A]
2-23
2.6.3 CPU Q-Fan Control [Enabled] ......................................................2-23
2.6.4 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage .................. 2-24
2.6.5 Anti Surge Support [Enabled] ....................................................... 2-24
2.7 Boot menu ................................................................................................... 2-25
2.7.1 Bootup NumLock State [On] ......................................................... 2-26
2.7.2 Full Screen Logo [Enabled] ........................................................... 2-26
2.7.3 Fast Boot [Enabled] ......................................................................2-26
2.7.4 Post Logo Delay Time [3 sec] ....................................................... 2-26
2.7.5 Wait For ‘F1’ If Error [Enabled] ...................................................... 2-26
2.7.6 Option ROM Messages [Force BIOS] ...........................................2-27
2.7.7 Next boot after AC Power Loss [Normal Boot] .............................. 2-27
2.7.8 CSM Parameters ..........................................................................2-27
2.7.9 Security Boot parameters .............................................................2-27
2.7.10 Setup Mode [EZ Mode] .................................................................2-29
2.7.11 Boot Option Priorities ....................................................................2-29
2.7.12 Boot Override ................................................................................2-29
2.8 Tools menu ..................................................................................................2-30
2.8.1 ASUS EZ Flash 2 Utility ................................................................2-30
2.8.2 ASUS SPD Information .................................................................2-30
2.8.3 ASUS O.C. Prole ......................................................................... 2-30
2.9 Exit menu .................................................................................................... 2-31
Appendices
Notices ..................................................................................................................... A-1
vi
Safety information
Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
Place the product on a stable surface.
If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
•
•
•
•
•
•
•
•
•
•
•
•
vii
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports.
• Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
Where to nd more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
viii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task
IMPORTANT: Instructions that you MUST follow to complete a task. .
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text Indicates a menu or an item to select.
Italics
Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign
means that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
ix
(continued on the next page)
F2A55-M LE specications summary
APU FM2 socket for AMD® A-Series Accelerated Processor Unit (APU) with AMD
Radeon™ HD 7000 Series graphics, up to 4 CPU cores
AMD® Turbo Core Technology 3.0 support
Microsoft® DirectX® 11 support
• The AMD® Turbo Core Technology 3.0 support depends on the APU types.
• Refer to www.asus.com for the AMD® APU support list.
Chipset AMD® A55 FCH (Hudson D2)
Memory 2 x DDR3 DIMM slots support a maximum 32GB unbuffered non-ECC
DDR3 2400(O.C.)/ 2250(O.C.) / 2200(O.C.) / 2133(O.C.) / 2000(O.C.) /
1866 / 1600 / 1333 / 1066MHz memory modules
Dual-channel memory architecture
• The maximum 32GB memory capacity can be supported with 16GB or above
DIMMs. ASUS will update the memory QVL once the DIMMs are available in the
market.
• Refer to www.asus.com for the latest Memory QVL (Qualied Vendors List).
• When you install a total memory of 4GB capacity or more, Windows® 32-bit
operation system may only recognize less than 3GB. We recommend a
maximum of 3GB system memory if you are using a Windows® 32-bit operating
system.
Graphics Integrated AMD Radeon™ HD 7000 Series Graphics in Northbridge A55
Multi-VGA output support: HDMI, DVI, D-Sub ports
- Supports HDMI with max. resolution 1920x1080@60Hz
- Supports DVI with max. resolution 2560x1600@60Hz
- Supports D-Sub with max. resolution 1920x1600@60Hz
- Supports Microsoft® DirectX 11
- Maximum shared memory of 2G
- Supports AMD® Dual Graphics technology
* Refer to www.amd.com for the discrete GPUs which support Dual
Graphics technology.
Expansion slots 2 x PCI Express 2.0 x16 slots (blue @ x16 mode, black @ x4 mode)
1 x PCI Express 2.0 x1 slot
1 x PCI slot
Multi-GPU support Supports AMD® 2-Way CrossFireX™ Technology (x16 and x4)
Storage AMD® A55 FCH:
- 6x Serial ATA 3Gb/s connectors with RAID 0, RAID 1, RAID 10 and
JBOD support
LAN Realtek® 8111F PCIe Gigabit LAN controller
Audio Realtek® ALC887 8-Channel High Denition Audio CODEC
- Supports Jack-Detection, Multi-streaming, Front Panel Jack-Retasking
USB AMD® A55 FCH:
- 12 x USB 2.0 ports (6 ports at the back panel, 6 ports at mid-board)
x
F2A55-M LE specications summary
ASUS unique features ASUS Digital Power Design:
- Industry leading digital 3+2 phase power design for APU
- APU Power Utility
ASUS EPU
- EPU
ASUS Exclusive Features
- ASUS Network iControl*
- ASUS AI Charger
- ASUS GPU Boost
- ASUS Turbo V
- ASUS Disk Unlocker
- ASUS AI Suite II
- ASUS Anti Surge
- ASUS ESD
- 100% All High-quality Conductive Polymer Capacitors
ASUS Quiet Thermal Solution
- ASUS Fanless Design: Stylish heatsink solution
- ASUS Fan Xpert
ASUS EZ DIY
- ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2
- ASUS My Logo 2
* The ASUS Network iControl feature does not support Windows®
XP/Vista operating systems.
ASUS Exclusive
overclocking features
Precision Tweaker 2
- vCore: Adjustable CPU voltage at 0.00625V increment
- vDDNB: Adjustable CPU/NB voltage at 0.00625V increment
- vDRAM Bus: Adjustable DRAM voltage at 0.005V increment
- vFCH: Adjustable FCH voltage at 0.01V increment
SFS (Stepless Frequency Selection)
- APU Frequency tuning from 90MHz up to 300MHz at 1MHz
increment
Overclocking Protection
- ASUS C.P.R.(CPU Parameter Recall)
(continued on the next page)
xi
F2A55-M LE specications summary
Specications are subject to change without notice.
Back Panel I/O ports 1 x PS/2 keyboard/mouse combo port
1 x HDMI port
1 x DVI port
1 x D-Sub port
1 x Optical S/PDIF Output port
1 x LAN (RJ-45) port
6 x USB 2.0/1.1 ports
8-channel audio I/O ports (3 jacks)
Internal I/O
connectors
3 x USB 2.0/1.1 connectors support additional 6 USB ports
6 x SATA 3Gb/s connectors
1 x CPU fan connector (4-pin)
1 x Chassis fan connector (4-pin)
1 x Front panel audio connector
1 x S/PDIF Out header
1 x COM connector
1 x System panel connector
1 x 24-pin EATX power connector
1 x LPT connector
1 x Power Fan (3-pin)
1 x 4-pin ATX 12V power connector
BIOS features 64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI 2.0, WfM 2.0, SM
BIOS 2.7, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS
CrashFreen BIOS 3, F12 Printscreen function, F3 Shortcut function and
ASUS DRAM SPD (Serial Presence Detect) memory information
Support DVD Drivers
ASUS utilities
ASUS Update
Anti-virus software (OEM version)
Form factor MicroATX form factor: 9.6 in x 9.2 in (24.4 cm x 23.4 cm)
xii
Package contents
Check your motherboard package for the following items.
F2A55-M LE
PCIEX16_1
PCIEX16_2
PCI1
PCIEX1_1
USB56USB78USB910
LPT
SPDIF_OUT
AAFP
CPU_FANPWR_FAN
DIGI
+VRM
CHA_FAN
Lithium Cell
CMOS Power
Super
I/O
AUDIO
ALC
887-CG
RTL
8111F
COM
KBMS_USB34
64Mb
BIOS
SB_PWR
CLRTC
AMD®
A55FCH
DDR3 DIMM_A1 (64bit, 240-pin module)
DDR3 DIMM_A2 (64bit, 240-pin module)
USB_11 12
LAN
_USB12
SATA6G_6SATA6G_5
SPDIFO
_HDMI
DVI_VGA
SOCKET FM2
EATXPWR
ATX12V
F_PANEL
SATA3G_4
SATA3G_3
SATA3G_2
SATA3G_1
SPEAKER
ASUS F2A55-M LE motherboard 2 x Serial ATA 3.0 Gb/s cables
User Guide
1 x I/O-Shield User Guide Support DVD
• If any of the above items is damaged or missing, contact your retailer.
• The illustrated items above are for reference only. Actual product specications may
vary with different models.
Product introduction
1
1.1.2 ASUS Digital power Design
DIGI+ POWER CONTROL: Digital Power Design for the APU
ASUS motherboards using the AMD® A55 chipset employ precise digital voltage regulation
for the APU, called DIGI+VRM (Voltage Regulation Modules) digital power design. The
APU voltage and VRM Frequency are adjusted via either carefully developed automated
modes, or by using user-dened proles. The effect is that DIGI+ VRM technology ensures
greater energy efciency and the most precise energy delivery. Boosted by world-renowned
ASUS quality, it creates an ideal computing platform for a diverse range of applications,
from gaming to multimedia or ofce work and heavy multi-tasking. Engineered and tested to
assure unimitigated performance, ASUS A55 boards with DIGI+ VRM remain efcient and
accurate, for reliable application in every scenario.
*DIGI+ VRM functions also available in FM2 socket compatible CPUs.
1.1 Special features
1.1.1 Product highlights
AMD® A-series accelerated processors with AMD® Radeon™ HD 7000 series
graphics
This motherboard supports AMD® A-series accelerated processor with AMD® Radeon™
HD 7000 series graphics. This revolutionary APU (Accelerated Processing Unit) combines
processing power and advanced DirectX 11 graphics in one small, energy-efcient design to
enable accelerated performance and an industry-leading visual experience. It features Dual-
channel DDR3 memory support and accelerates data transfer rate up to 5GT/s.
AMD® A55 (Hudson D2) FCH Chipset
AMD® A55 FCH (Hudson D2) is designed to support up to 5GT/s interface and PCI Express
2.0 x 16 graphics.
AMD® CrossFireX™ Technology
AMD’s CrossFireX™ boosts image quality along with rendering speed, eliminating the
need to scale down screen resolution to get high quality images. CrossFireX™ allows
higher antialiasing, anisotropic ltering, shading, and texture settings. Adjust your display
congurations, experiment with the advanced 3D settings, and check the effects with a real-
time 3D-rendered previews within AMD Catalyst™ Control Center.
100% All High-quality Conductive Polymer Capacitors
This motherboard uses all high-quality conductive polymer capacitors for durability, improved
lifespan, and enhanced thermal capacity.
ASUS F2A55-M LE 1-1
• The actual charging speed may vary with your USB device’s conditions.
ASUS UEFI BIOS (EZ Mode)
ASUS UEFI BIOS, a UEFI compliant architecture, offers the rst mouse-controlled intuitive
graphical BIOS interface that goes beyond the traditional keyboard-only BIOS controls,
providing you with more exibility, convenience, and easy to navigate EFI BIOS than the
traditional BIOS versions. It offers you with dual selectable modes and native support for hard
drives larger than 2.2 TB.
ASUS UEFI BIOS includes the following new features:
• F12 BIOS snapshot hotkey
• F3 Shortcut for most accessed information
• ASUS DRAM SPD (Serial Presence Detect) information detecting faulty DIMMs, and
helping with difcult POST situations.
ASUS TurboV
With its user-friendly interface, ASUS TurboV offers you the adrenaline rush of real-time
overclocking without exiting or rebooting the OS. It also provides you with the ASUS OC
proles for the best overclocking settings in different scenarios.
GPU Boost
GPU Boost accelerates the integrated GPU for extreme graphics performance, facilitates
exible frequency adjustments, and easily delivers stable system-level upgrades for every
use.
EPU
EPU (Energy Processing Unit), the world’s rst real-time system power-saving chip,
automatically detects the current system load and intelligently moderates power usage.
It offers a total system-wide energy optimization, reduces fan noise, and extends the
component’s lifespan.
1.1.3 ASUS Exclusive Features
Network iControl
Network iControl is an intuitive one-step network control center that makes it easier for you to
manage your bandwidth and allows you to set, monitor, and schedule the bandwidth priorities
for your network programs. It allows you to automatically connect to a PPPoE network for a
more convenient online experience.
* The ASUS Network iControl feature does not support Windows® XP/Vista operating systems.
Ai Charger
Ai Charger is ASUS fast-charging software that supports iPod, iPhone, and iPad.
• Check your USB mobile device if it fully supports the BC 1.1 function.
Chapter 1: Product introduction
1-2
ASUS Anti-Surge Protection
This special design protects expensive devices and the motherboard from damage caused
by power surges from switching power supply unit (PSU).
AI Suite II
With its user interface, ASUS AI Suite II integrates several ASUS utilities and allows you to
launch and operate these utilities simultaneously. It allows you to congure the overclocking
settings, adjust the frequencies and related voltages, remotely control the system via a
mobile device, and other easy-to-use helpful utilities.
ASUS Fan Xpert
ASUS Fan Xpert intelligently allows you to adjust the CPU fan speed based on different
ambient temperatures, resulting to a quiet and cool computing environment.
ASUS EZ Flash 2
ASUS EZ Flash 2 is a user-friendly utility that allows you to update the BIOS without using a
bootable oppy disk or an OS-based utility.
ASUS MyLogo2™
Turn your favorite photos into 256-color boot logos to personalize your system.
ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 allows you to restore a corrupted BIOS le from a USB storage
device that contains the BIOS le.
C.P.R. (CPU Parameter Recall)
The BIOS C.P.R. feature automatically restores the CPU default settings when the system
hangs due to overclocking failure. C.P.R. eliminates the need to open the system chassis and
clear the RTC data. Simply shut down and reboot the system, and the BIOS automatically
restores the CPU parameters to their default settings.
ErP ready
The motherboard is European Union´s Energy-related Products (ErP) ready, and ErP
requires products to meet certain energy efciency requirements in regards to energy
consumptions. This is in line with ASUS vision of creating environment-friendly and energy-
efcient products through product design and innovation to reduce carbon footprint of the
product and thus mitigate environmental impacts.
ASUS F2A55-M LE 1-3
1.2 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due
to static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, switch off the ATX power supply and
detach its power cord. Failure to do so may cause severe damage to the motherboard,
peripherals, or components.
Standby Power LED
The motherboard comes with a standby power LED that lights up to indicate that the system
is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down
the system and unplug the power cable before removing or plugging in any motherboard
component. The illustration below shows the location of the onboard LED.
F2A55-M LE
SB_PWR
ON
Standby Power Powered Off
OFF
F2A55-M LE Onboard LED
Chapter 1: Product introduction
1-4
F2A55-M LE
1.3 Motherboard overview
1.3.1 Placement direction
When installing the motherboard, ensure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.
DO NOT overtighten the screws! Doing so can damage the motherboard.
Place this side towards
the rear of the chassis.
1.3.2 Screw holes
Place six screws into the holes indicated by circles to secure the motherboard to the chassis.
ASUS F2A55-M LE 1-5
1.3.3 Motherboard layout
Chapter 1: Product introduction
1-6
1.4 Accelerated Processing Unit (APU)
This motherboard comes with an FM2 socket designed for AMD® A-series accelerated
processors with AMD® Radeon™ HD 7000 series graphics.
Ensure that you use a APU designed for the FM2 socket. The APU ts in only one correct
orientation. DO NOT force the APU into the socket to prevent bending the pins and
damaging the APU!
1.3.4 Layout contents
Connectors/Jumpers/Slots/LED Page
1. Power, CPU, and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN, and 4-pin
CHA_FAN)
1-23
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-24
3. AMD FM2 socket 1-7
4. DDR3 DIMM slots 1-11
5. SATA 3.0Gb/s connectors (7-pin SATA3G_1~6) 1-25
6. System panel connector (10-1 pin F_PANEL) 1-26
7. Speaker connector (4-pin SPEAKER) 1-26
8. Clear RTC RAM (3-pin CLRTC) 1-20
9. Standby power LED (SB_PWR) 1-4
10. USB 2.0 connectors (10-1 pin USB56, USB78, USB910) 1-28
11. LPT connector (26-1 pin LPT) 1-28
12. Front panel audio connector (10-1 pin AAFP) 1-27
13. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
F2A55-M LE
F2A55-M LE CPU socket FM2
ASUS F2A55-M LE 1-7
1.4.1 APU installation
1
43
2
Chapter 1: Product introduction
1-8
12
53 4
1.4.2 APU heatsink and fan assembly installation
Apply the Thermal Interface Material
to the APU heatsink and APU before
you install the heatsink and fan if
necessary.
To install the APU heatsink and fan assembly
ASUS F2A55-M LE 1-9
To uninstall the APU heatsink and fan assembly
5
3
1
4
2
Chapter 1: Product introduction
1-10
1.5 System memory
1.5.1 Overview
This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The gure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1
F2A55-M LE
F2A55-M LE 240-pin DDR3 DIMM sockets
DIMM_A1
DIMM_B1
ASUS F2A55-M LE 1-11
1.5.2 Memory congurations
You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• We recommend that you install the memory modules from the blue slots for better
overclocking capability.
• Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.
• Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows®
OS.
- Use a 64-bit Windows® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.
• The maximum 32GB memory capacity can be supported with 16GB or above DIMMs.
ASUS will update the memory QVL once the DIMMs are available in the market.
• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor-marked
or at a higher frequency, refer to section 2.4 Ai Tweaker menu for manual memory
frequency adjustment.
• For system stability, use a more efcient memory cooling system to support a full
memory load (2 DIMMs) or overclocking condition.
Chapter 1: Product introduction
1-12
F2A55-M LE Motherboard Qualied Vendors Lists (QVL)
DDR3 2400 (O.C.) MHz capability
Vendors Part No. Size SS/DS Chip Brand Chip NO. Timing Voltage DIMM socket
support (optional)
1DIMM 2DIMMs
G.SKILL F3-19200CL9D-4GBPIS(XMP) 4GB(2x 2GB) DS - - 9-11-9-28 1.65V •
KINGMAX FLLE88F-C8KKAA HAIS(XMP) 2GB SS - - 10-11-10-30 1.8V •
Team TXD34096M2400HC9N-L 4GB DS SEC 128
HCH9
K4B2G0846D 9-11-11-28 1.65V • •
DDR3 2250 (O.C.) MHz capability
Vendors Part No. Size SS/DS Chip
Brand
Chip
NO.
Timing Voltage DIMM socket
support (optional)
1DIMM 2DIMMs
KINGSTON KHX2250C9D3T1K2/4GX(XMP) 4GB(2X2GB) DS - - - 1.65V • •
Vendors Part No. Size SS/
DS
Chip
Brand
Chip
NO.
Timing Voltage DIMM socket
support (optional)
1DIMM 2DIMMs
GEIL GET34GB2200C9DC(XMP) 2GB DS - - 9-10-9-28 1.65V ·
GEIL GET38GB2200C9ADC(XMP) 4GB DS - - 9-11-9-28 1.65V ·
KINGMAX FLKE85F-B8KJAA-FEIS(XMP) 2GB DS - - - - ·
KINGMAX FLKE85F-B8KJA FEIH(XMP) 4GB(2 x 2GB) DS - - - 1.5V-1.7V · ·
DDR3 2200 (O.C.) MHz capability
DDR3 2133 (O.C.) MHz capability
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket
support (optional)
1DIMM 2DIMMs
A-DATA AX3U2133GC2G9B-DG2(XMP) 2GB SS - - 9-11-9-27 1.55~1.75V · ·
CORSAIR CMT16GX3M4X2133C9(XMP 1.3) 16GB ( 4GB x4 ) DS - - 9-11-10-27 1.50V · ·
CORSAIR CMT4GX3M2A2133C9(XMP) 4GB(2x 2GB) DS - - 9-10-9-24 1.65V · ·
CORSAIR CMT4GX3M2B2133C9(XMP) 4GB(2x 2GB) DS - - 9-10-9-27 1.50V · ·
CORSAIR CMT8GX3M2B2133C9(XMP) 8GB ( 4GB x 2) DS - - 9-11-9-27 1.50V · ·
G.SKILL F3-17000CL9Q-16GBZH(XMP1.3) 16GB ( 4GB x4 ) DS - - 9-11-10-28 1.65V · ·
GEIL GU34GB2133C9DC(XMP) 4GB(2 x 2GB) DS - - 9-9-9-28 1.65V · ·
KINGSTON KHX2133C11D3T1K2/16GX(XMP) 16GB(8GB x 2) DS - - - 1.6V · ·
KINGSTON KHX21C11T1BK2/16X(XMP) 16GB(8GBx2) DS - - - 1.6V · ·
KINGSTON KHX2133C9AD3T1K2/4GX(XMP) 4GB ( 2x 2GB ) DS - - - 1.65V · ·
KINGSTON KHX2133C9AD3T1K4/8GX(XMP) 8GB(4 x 2GB) DS - - 9-11-9-27 1.65V ·
KINGSTON KHX2133C9AD3T1FK4/8GX(XMP) 8GB(4x 2GB) DS - - - 1.65V · ·
KINGSTON KHX21C11T1BK2/16X(XMP) 16GB(8GBx2) DS - - - 1.6V · ·
KINGSTON KHX21C11T1BK2/8X(XMP) 8GB(4GBx2) DS - - - 1.6V · ·
Team TXD34096M2133HC9N-L 4GB DS SEC
128
HCH9
K4B2G0846D 9-11-11-28 1.65V · ·
Vendors Part No. Size SS/
DS
Chip
Brand
Chip
NO.
Timing Voltage DIMM socket support
(optional)
1DIMM 2DIMMs
CORSAIR CMZ4GX3M2A2000C10(XMP) 4GB(2 x 2GB) SS - - 10-10-10-27 1.50V · ·
CORSAIR CMT6GX3M3A2000C8(XMP) 6GB(3 x 2GB) DS - - 8-9-8-24 1.65V · ·
G.SKILL F3-16000CL9D-4GBFLS(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V · ·
G.SKILL F3-16000CL9D-4GBTD(XMP) 4GB(2 x 2GB) DS - - 9-9-9-27 1.65V
G.SKILL F3-16000CL6T-6GBPIS(XMP) 6GB (3x 2GB ) DS - - 6-9-6-24 1.65V · ·
GEIL GUP34GB2000C9DC(XMP) 4GB(2 x 2GB) DS - - 9-9-9-28 1.65V · ·
KINGSTON KHX2000C9AD3W1K2/4GX(XMP) 4GB ( 2x 2GB ) DS - - - 1.65V · ·
KINGSTON KHX2000C9AD3W1K3/6GX(XMP) 6GB ( 3x 2GB ) DS - - - 1.65V · ·
KINGSTON KHX2000C9AD3T1K3/6GX(XMP) 6GB (3x 2GB ) DS - - - 1.65V · ·
DDR3 2000 (O.C.) MHz capability
ASUS F2A55-M LE 1-13
DDR3 1866 MHz capability
Vendors Part No. Size SS/DS Chip
Brand
Chip
NO.
Timing Voltage DIMM socket
support (Optional)
1DIMM 2DIMMs
CORSAIR CMT4GX3M2A1866C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMT6GX3MA1866C9(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMZ8GX3M2A1866C9(XMP) 8GB(2 x 4GB) DS - - 9-10-9-27 1.50V · ·
G.SKILL F3-14900CL9Q-16GBZL(XMP1.3) 16GB ( 4GB x4 ) DS - - 9-10-9-28 1.5V · ·
G.SKILL F3-14900CL10Q2-64GBZLD(XMP1.3) 64GB ( 8GBx 8 ) DS - - 10-11-10-30 1.5V · ·
G.SKILL F3-14900CL9D-8GBXL(XMP) 8GB(2 x 4GB) DS - - 9-10-9-28 1.5V · ·
G.SKILL F3-14900CL9Q-8GBXL(XMP) 8GB(2GBx4) DS - - 9-9-9-24 1.6V · ·
KINGSTON KHX1866C9D3K4/16GX(XMP) 16GB ( 4GB x4 ) DS - - - 1.65V · ·
KINGSTON KHX1866C9D3T1K3/6GX(XMP) 6GB(3 x 2GB) DS - - - 1.65V · ·
KINGSTON KHX1866C11D3P1K2/8G 8GB ( 4GB x 2) DS - - - 1.5V · ·
KINGSTON KHX1866C9D3K2/8GX(XMP) 8GB(4GBX2) DS - - - 1.65V · ·
DDR3 1600 MHz capability
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket
support
(Optional)
1DIMM 2DIMMs
A-DATA AM2U16BC2P1 2GB SS A-DATA 3CCD-1509A EL1126T - - ·
A-DATA AM2U16BC4P2 4GB DS A-DATA 3CCD-1509A EL1126T - - · ·
A-DATA AX3U1600GC4G9-2G(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.55V-1.75V · ·
A-DATA AX3U1600XC4G79-2X(XMP) 8GB(2 x 4GB) DS - - 7-9-7-21 1.55V-1.75V · ·
Apacer 78.B1GE3.9L10C 4GB DS Apacer
KZZC
AM5D5908DEQSCK - - · ·
CORSAIR CMD12GX3M6A1600C8(XMP) 12GB(6x2GB) DS - - 8-8-8-24 1.65V · ·
CORSAIR CMZ32GX3M4X1600C10(XMP) 32GB(8GBx4) DS - - 10-10-
10-27
1.50V · ·
CORSAIR CMP4GX3M2A1600C8(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V · ·
CORSAIR CMP4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMP4GX3M2C1600C7(XMP) 4GB(2 x 2GB) DS - - 7-8-7-20 1.65V · ·
CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR TR3X6G1600C8 G(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V · ·
CORSAIR TR3X6G1600C8D G(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V · ·
CORSAIR TR3X6G1600C9 G(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMP8GX3M2A1600C9(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.65V · ·
CORSAIR CMZ8GX3M2A1600C7R(XMP) 8GB(2 x 4GB) DS - - 7-8-7-20 1.50V · ·
CORSAIR CMX8GX3M4A1600C9(XMP) 8GB(4 x 2GB) DS - - 9-9-9-24 1.65V · ·
Crucial BL25664BN1608.16FF(XMP) 6GB(3 x 2GB) DS - - - - · ·
G.SKILL F3-12800CL7D-4GBRH(XMP) 4GB(2 x 2GB) SS - - 7-7-7-24 1.6V · ·
G.SKILL F3-12800CL7D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 7-7-8-24 XMP 1.35V · ·
G.SKILL F3-12800CL7D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 7-8-7-24 1.6V · ·
G.SKILL F3-12800CL8D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.60V · ·
G.SKILL F3-12800CL9D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 XMP 1.35V · ·
G.SKILL F3-12800CL9D-4GBRL(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.5V · ·
G.SKILL F3-12800CL9T-6GBNQ(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5V~1.6V · ·
G.SKILL F3-12800CL7D-8GBRH(XMP) 8GB(2 x 4GB) DS - - 7-8-7-24 1.6V · ·
G.SKILL F3-12800CL8D-8GBECO(XMP) 8GB(2 x 4GB) DS - - 8-8-8-24 XMP 1.35V · ·
G.SKILL F3-12800CL9D-8GBRL(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.5V · ·
GEIL GET316GB1600C9QC(XMP) 16GB ( 4x
4GB )
DS - - 9-9-9-28 1.6V · ·
GEIL GV34GB1600C8DC(XMP) 2GB DS - - 8-8-8-28 1.6V · ·
HYNIX HMT351U6CFR8C-PB 4GB DS DS H5TQ2G83CFR PBC - - - -
KINGMAX FLGE85F-B8KJ9A FEIS(XMP) 2GB DS - - - - - -
KINGMAX FLGE85F-B8MF7 MEEH(XMP) 2GB DS - - 7 - - -
KINGSTON KHX1600C9D3P1K2/4G 4GB(2 x 2GB) SS - - - 1.5V - -
KINGSTON KHX1600C9D3K3/12GX(XMP) 12GB(3x4GB) DS - - 9-9-9-27 1.65V - -
KINGSTON KHX1600C9D3T1BK3/
12GX(XMP)
12GB(3x4GB) DS - - 9-9-9-27 1.65V · ·
Chapter 1: Product introduction
1-14
DDR3 1600 MHz capability
DDR3 1333 MHz capability
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket
support
(Optional)
1DIMM 2DIMMs
A-DATA AD3U1333C2G9 2GB SS A-DATA 3CCD-1509HNA1126L - · ·
A-DATA AM2U139C2P1 2GB SS ADATA 3CCD-1509A EL1127T - - · ·
A-DATA AX3U1333C2G9-BP 2GB SS - - - - · ·
A-DATA AXDU1333GC2G9-2G(XMP) 4GB(2 x 2GB) SS - - 9-9-9-24 1.25V-
1.35V(low
voltage)
· ·
A-DATA AD63I1C1624EV 4GB DS A-Data 3CCA-1509A - - · ·
A-DATA AM2U139C4P2 4GB DS ADATA 3CCD-1509A EL1127T - - · ·
A-DATA SU3U1333W8G9-B 8GB DS ELPIDA J4208BASE-DJ-F - - · ·
Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808DEWSBG - - · ·
Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808FEQSBG 9 - · ·
Apacer AU02GFA33C9NBGC 2GB DS Apacer AM5D5808APQSBG - - · ·
Apacer 78.B1GDE.9L10C 4GB DS Apacer AM5D5908CEHSBG - - · ·
CORSAIR TR3X6G1333C9 G 6GB(3x 2GB) SS - - 9-9-9-24 1.50V · ·
CORSAIR CMD24GX3M6A1333C9(XMP) 24GB(6x4GB) DS - - 9-9-9-24 1.60V · ·
CORSAIR TW3X4G1333C9D G 4GB(2 x 2GB) DS - - 9-9-9-24 1.50V · ·
CORSAIR CM3X4GA1333C9N2 4GB DS CORSAIR 256MBDCJGELC0401136 9-9-9-24 - · ·
CORSAIR CMX4GX3M1A1333C9 4GB DS - - 9-9-9-24 1.50V · ·
CORSAIR CMD8GX3M4A1333C7 8GB(4 x 2GB) DS - - 7-7-7-20 1.60V · ·
Crucial CT25664BA1339.16FF 2GB DS Micron 9KF27D9KPT 9 - · ·
Crucial BL25664BN1337.16FF (XMP) 6GB(3 x 2GB) DS - - 7-7-7-24 1.65V · ·
ELPIDA EBJ21UE8EDF0-DJ-F 2GB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low
voltage)
· ·
G.SKILL F3-10666CL8D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 8-8-8-8-24 XMP 1.35V · ·
G.SKILL F3-10666CL7D-8GBRH(XMP) 8GB(2 x 4GB) DS - - 7-7-7-21 1.5V · ·
GEIL GG34GB1333C9DC 4GB(2 x 2GB) DS GEIL GL1L128M88BA12N 9-9-9-24 1.3V(low
voltage)
· ·
GEIL GV34GB1333C9DC 4GB(2 x 2GB) DS - - 9-9-9-24 1.5V · ·
GEIL GVP34GB1333C7DC 4GB(2 x 2GB) DS - - 7-7-7-24 1.5V · ·
Hynix HMT325U6BFR8C-H9 2GB SS Hynix H5TQ2G83BFRH9C - - · ·
Hynix HMT125U6TFR8A-H9 2GB DS Hynix H5TC1G83TFRH9A - 1.35V(low
voltage)
· ·
Hynix HMT351U6BFR8C-H9 4GB DS Hynix H5TQ2G83BFRH9C - - · ·
KINGMAX FLFE85F-C8KF9 CAES 2GB SS KINGMAX KFC8FMFXF-DXX-15A - - · ·
KINGMAX FLFE85F-C8KL9 NAES 2GB SS KINGMAX KFC8FNLXF-DXX-15A - - · ·
KINGMAX FLFE85F-C8KM9 NAES 2GB SS KINGMAX KFC8FNMXF-BXX-15A - - · ·
KINGMAX FLFE85F-B8KL9 NEES 2GB DS KINGMAX KKB8FNWBFGNX-26A - - · ·
KINGMAX FLFF65F-C8KL9 NEES 4GB DS KINGMAX KFC8FNLXF-DXX-15A - - · ·
KINGMAX FLFF65F-C8KM9 NEES 4GB DS KINGMAX KFC8FNMXF-BXX-15A - - · ·
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket
support
(Optional)
1DIMM 2DIMMs
KINGSTON KHX1600C9D3K4/16GX(XMP) 16GB(4GB x4) DS - - - 1.65V · ·
KINGSTON KHX1600C10D3B1K2/16G 16GB(8GBx2) DS - - - 1.5V · ·
KINGSTON KHX16C9K2/16 16GB(8GBx2) DS - - - 1.5V · ·
KINGSTON KHX1600C9AD3/2G 2GB DS - - - 1.65V · ·
KINGSTON KVR1600D3N11/2G-ES 2GB DS KTC D1288JPNDPLD9U 11-11-11-28 1.35V-1.5V · ·
KINGSTON KHX1600C7D3K2/4GX(XMP) 4GB (2x 2GB) DS - - - 1.65V · ·
KINGSTON KHX1600C8D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V · ·
KINGSTON KHX1600C8D3T1K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V · ·
KINGSTON KHX1600C9D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 1.65V · ·
KINGSTON KHX1600C9D3LK2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 XMP 1.35V · ·
KINGSTON KHX1600C9D3X2K2/4GX(XMP) 4GB(2 x 2GB) DS - - 9-9-9-27 1.65V · ·
KINGSTON KHX1600C9D3T1K3/6GX(XMP) 6GB (3x 2GB) DS - - - 1.65V · ·
KINGSTON KHX1600C9D3K3/6GX(XMP) 6GB(3 x 2GB) DS - - 9 1.65V · ·
KINGSTON KHX1600C9D3T1BK3/6GX(XMP) 6GB(3 x 2GB) DS - - 9-9-9-27 1.65V · ·
KINGSTON KHX1600C9D3K2/8GX(XMP) 8GB(2 x 4GB) DS - - 9-9-9-27 1.65V ·
KINGSTON KHX1600C9D3P1K2/8G 8GB(2 x 4GB) DS - - - 1.5V · ·
Super Talent WA160UX6G9 6GB(3 x 2GB) DS - - 9 - · ·
SanMax SMD-4G68HP-16KZ 4GB DS HYNIX H5TQ2G83BFR
PBC
- - · ·
Apacer 78.B1GE3.9L10C 4GB DS Apacer
KZZC
AM5D5908DEQSCK - - · ·
KINGSTON KHX1600C10D3B1K2/16G 16GB(8GBx2) DS - - - 1.5V · ·
KINGSTON KHX16C9K2/16 16GB(8GBx2) DS - - - 1.5V · ·
Elixir M2X8G64CB8HB5N-DG(XMP) 8GB DS Elixir1213 N2CB4G8BOBN-
DG
- - · ·
ASUS F2A55-M LE 1-15
Side(s): SS - Single-sided DS - Double-sided
DIMM support:
• 1 DIMM: Supports one module inserted into any slot as Single-channel memory
conguration.
• 2 DIMMs: Supports two modules inserted into both the blue slots as one pair of Dual-
channel memory conguration.
Visit the ASUS website at www.asus.com for the latest QVL.
DDR3 1333 MHz capability
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket
support
(Optional)
1DIMM 2DIMMs
KINGSTON KVR1333D3N9/2G 2GB SS Hynix H5TQ2G83AFRH9C 9 - · ·
KINGSTON KVR1333D3S8N9/2G 2GB SS Micron IID77 D9LGK - 1.5V · ·
KINGSTON KVR1333D3S8N9/2G-SP 2GB SS ELPIDA J2108BCSE-DJ-F - 1.5V · ·
KINGSTON KVR1333D3N9/2G 2GB DS ELPIDA J1108BFBG-DJ-F 9 1.5V · ·
KINGSTON KVR1333D3N9/2G 2GB DS KTC D1288JPNDPLD9U 9 1.5V · ·
KINGSTON KVR1333D3N9/2G 2GB DS ELPIDA J1108BDSE-DJ-F 9 1.5V · ·
KINGSTON KVR1333D3N9/2G-SP 2GB DS KTC D1288JEMFNGD9U - 1.5V · ·
KINGSTON KVR1333D3N9/2G-SP 2GB DS KINGSTON D1288JPSFPGD9U - 1.5V · ·
KINGSTON KHX1333C7D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 7 1.65V · ·
KINGSTON KHX1333C9D3UK2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 XMP 1.25V · ·
KINGSTON KVR1333D3N9/4G 4GB DS ELPIDA J2108BCSE-DJ-F 9 1.5V · ·
KINGSTON KVR1333D3N9/4G 4GB DS ELPIDA J2108BCSE-DJ-F - 1.5V · ·
KINGSTON KVR1333D3N9/4G 4GB DS KTC D2568JENCNGD9U - 1.5V · ·
KINGSTON KVR1333D3N9/4G 4GB DS Hynix H5TQ2G83AFR - - · ·
KINGSTON KVR1333D3N9/4G-SP 4GB DS KINGSTON D2568JENCPGD9U - 1.5V · ·
Micron MT8JTF25664AZ-1G4D1 2GB SS Micron OJD12D9LGK - - · ·
Micron MT8JTF25664AZ-1G4M1 2GB SS MICRON IJM22 D9PFJ - - · ·
Micron MT16JTF25664AZ-1G4F1 2GB DS Micron 9KF27D9KPT 9 - · ·
Micron MT16JTF51264AZ-1G4D1 4GB DS Micron OLD22D9LGK - - · ·
NANYA NT4GC64B8HG0NF-CG 4GB DS NANYA NT5CB256M8GN-CG - - · ·
PSC AL8F8G73F-DJ2 2GB DS PSC A3P1GF3FGF - - · ·
SAMSUNG M378B5773DH0-CH9 2GB SS SAMSUNG K4B2G0846D - - · ·
SAMSUNG M378B5673FH0-CH9 2GB DS SAMSUNG K4B1G0846F - - · ·
SAMSUNG M378B5273CH0-CH9 4GB DS SAMSUNG K4B2G0846C - - · ·
Super
Talent
W1333UB2GS 2GB DS SAMSUNG K4B1G0846F 9 - · ·
Super
Talent
W1333UB4GS 4GB DS SAMSUNG K4B2G0846C - - · ·
Super
Talent
W1333UX6GM 6GB(3x 2GB) DS Micron 0BF27D9KPT 9-9-9-24 1.5V · ·
KINGSTEK KSTD3PC-10600 2GB SS MICRON PE911-125E - - · ·
Vendors Part No. Size SS/
DS
Chip
Brand
Chip NO. Timing Voltage DIMM socket support
(optional)
1DIMM 2DIMMs
Crucial CT12864BA1067.8FF 1GB SS Micron 9GF22D9KPT 7 - · ·
ELPIDA EBJ21UE8EDF0-AE-F 2GB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low voltage) · ·
KINGSTON KVR1066D3N7/1G 1GB SS ELPIDA J1108EDSE-DJ-F 7 1.5V · ·
KINGSTON KVR1066D3N7/4G 4GB DS Hynix H5TQ2G83AFR - 1.5V · ·
DDR3 1066 MHz capability
Chapter 1: Product introduction
1-16
1.5.3 Installing a DIMM
1
2
3
To remove a DIMM
B
A
A
ASUS F2A55-M LE 1-17
1.6 Expansion slots
In the future, you may need to install expansion cards. The following sub-sections describe
the slots and the expansion cards that they support.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.6.1 Installing an expansion card
To install an expansion card:
1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4. Align the card connector with the slot and press rmly until the card is completely
seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that
the cards do not need IRQ assignments. Otherwise, conicts will arise between the two PCI
groups, making the system unstable and the card inoperable.
1.6.3 PCI slot
The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specications.
1.6.2 Conguring an expansion card
After installing the expansion card, congure it by adjusting the software settings.
1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2. Assign an IRQ to the card.
3. Install the software drivers for the expansion card.
1.6.4 PCI Express x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.
Chapter 1: Product introduction
1-18
1.6.5 PCI Express x16 slots
This motherboard supports two PCI Express x16 graphics cards that comply with the PCI
Express specications.
• In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
• We recommend that you provide sufcient power when running CrossFireX™ mode.
See page 1-24 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN when using
multiple graphics cards for better thermal environment.
VGA conguration PCI Express operating mode
PCIe x16_1 PCIe x16_2
Single VGA/PCIe card x16 (Recommended for single VGA card) N/A
Dual VGA/PCIe card x16 x4
IRQ assignments for this motherboard
A B C D E F G H
PCIEx16_1 – – shared – – – – –
PCIEx16_2 shared – – – – – – –
PCIEx1_1 shared – – – – – – –
PCI1 slot – – – – shared – – –
Realtek LAN controller – shared – – – – – –
HD audio shared – – – – – – –
SATA controller – – – shared – – – –
On Chip XHCI controller1 – – shared – – – – –
On Chip XHCI controller2 – shared – – – – – –
On Chip USB EHCI 1/2/3 – shared – – – – – –
On Chip USB OHCI 1/2/3/4 – – shared – – – – –
ASUS F2A55-M LE 1-19
1.7 Jumpers
Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5~10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to
reenter data.
• If the steps above do not help, remove the onboard battery and move the jumper
again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the
battery.
• You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature.
Shut down and reboot the system so the BIOS can automatically reset parameter
settings to default values.
F2A55-M LE
F2A55-M LE Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC
Chapter 1: Product introduction
1-20
1.8 Connectors
1.8.1 Rear panel ports
1. PS/2 keyboard/mouse combo port. This port is for a PS/2 mouse or PS/2 keyboard.
2. Optical S/PDIF Out port. This port connects an external audio output device via an
optical S/PDIF cable.
3. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other
VGA-compatible devices.
4. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub.
LAN port LED indications
Activity/Link LED Speed LED
Status Description Status Description
OFF No link OFF 10Mbps connection
ORANGE Linked ORANGE 100Mbps connection
BLINKING Data activity GREEN 1Gbps connection LAN port
SPEED
LED
ACT/LINK
LED
5. Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
6. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6, and
8-channel congurations, the function of this port becomes Front Speaker Out.
7. Microphone port (pink). This port connects to a microphone.
Refer to the audio conguration table on the next page for the function of the audio ports in
2, 4, 6, or 8-channel conguration.
3
1011
1
12
5 6
9
4
8 7
2
ASUS F2A55-M LE 1-21
8. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for USB
2.0/1.1 devices.
9. USB 2.0 ports 11 and 12. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0/1.1 devices.
10. DVI-D port. This port is for any DVI-D compatible device. DVI-D can’t be converted to
output RGB Signal to CRT and isn’t compatible with DVI-I.
11. HDMI port. This port is for a High-Denition Multimedia Interface (HDMI) connector,
and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected
content.
12. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB
2.0/1.1 devices.
Audio 2, 4, 6, or 8-channel conguration
Port Headset
2-channel 4-channel 6-channel 8-channel
Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out
Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out
Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center
Lime (Front panel) — — — Side Speaker Out
To congure an 8-channel audio output:
Use a chassis with HD audio module in the front panel to support an 8-channel audio
output.
Chapter 1: Product introduction
1-22
1.8.2 Internal connectors
1. Power, CPU, and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN, and
4-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
• The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.
• Only the CPU_FAN connector support the ASUS Fan Xpert feature.
• If you install two VGA cards, we recommend that you plug the rear chassis fan cable
to the motherboard connector labeled CHA_FAN for better thermal environment.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
F2A55-M LE
F2A55-M LE Fan connectors
CPU_FANPWR_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
CHA FAN PWM
CHA FAN IN
CHA FAN PWR
GND
Rotation
+12V
GND
CHA_FAN
ASUS F2A55-M LE 1-23
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply. The plugs from the power supply are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
•
We recommend that you use an ATX 12V Specication 2.0-compliant power supply
unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin
power plugs.
•
If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
power plug can provide at least 15 A on +12 V and that the PSU has a minimum
power rating of 300W. The system may become unstable or may not boot up if the
power is inadequate.
•
DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.
• We recommend that you use a PSU with higher power output when conguring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
•
If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
F2A55-M LE
F2A55-M LE ATX power connectors
EATXPWR
PIN 1
PIN 1
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
ATX12V
+12V DC
+12V DC
GND
GND
Chapter 1: Product introduction
1-24
4. Serial ATA 3.0 Gb/s connectors (7-pin SATA3G_1~6)
These connectors are for the Serial ATA 3.0 Gb/s signal cables for Serial ATA hard
disk drives and optical disc drives. If you installed Serial ATA hard disk drives, you
can create a RAID 0, RAID 1, RAID 10, or JBOD conguration through the onboard
controller.
• These connectors are set to IDE mode by default. In IDE mode, you can connect
Serial ATA boot/data hard disk drives to these connectors. If you intend to create a
Serial ATA RAID set using these connectors, set the type of the SATA connectors in
the BIOS to [RAID]. See section 2.5.2 SATA Conguration for details.
• You must install Windows® XP Service Pack 3 or later version before using Serial
ATA hard disk drives. The Serial ATA RAID feature is available only if you are using
Windows® XP SP3 or later version.
• When using hot-plug and NCQ, set the type of the SATA connectors in the BIOS to
[AHCI]. See section 2.5.2 SATA Conguration for details.
F2A55-M LE
GND
RSATA_RXP1
RSATA_RXN1
GND
RSATA_TXN1
RSATA_TXP1
GND
SATA3G_1
GND
RSATA_RXP2
RSATA_RXN2
GND
RSATA_TXN2
RSATA_TXP2
GND
SATA3G_2
GND
RSATA_RXP3
RSATA_RXN3
GND
RSATA_TXN3
RSATA_TXP3
GND
SATA3G_3
GND
RSATA_RXP4
RSATA_RXN4
GND
RSATA_TXN4
RSATA_TXP4
GND
SATA3G_4
SATA3G_5
SATA3G_6
GND
RSATA_TXP5
RSATA_TXN5
GND
RSATA_RXN5
RSATA_RXP5
GND
GND
RSATA_TXP6
RSATA_TXN6
GND
RSATA_RXN6
RSATA_RXP6
GND
F2A55-M LE SATA 3.0Gb/s connectors
ASUS F2A55-M LE 1-25
4. System panel connector (10-1 pin PANEL)
This connector supports several chassis-mounted functions.
• System power LED (2-pin PLED)
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
•
Hard disk drive activity LED (2-pin +IDELED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or ashes when data is read from or written to
the HDD.
•
ATX power button/soft-off button (2-pin PWRBTN)
This 2-pin connector is for the system power button.
•
Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
F2A55-M LE
F2A55-M LE System panel connector
PIN 1
PWR BTN
PLED+
PLED-
PWR
GND
HD_LED+
HD_LED-
Ground
Reset
F_PANEL
PWR LED
HD_LED RESET
5. Speaker connector (4-pin SPEAKER)
The 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
F2A55-M LE
F2A55-M LE Speaker Out Connector
+5V
GND
GND
Speaker Out
SPEAKER
PIN 1
Chapter 1: Product introduction
1-26
6. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
The S/PDIF module is purchased separately.
• We recommend that you connect a high-denition front panel audio module to this
connector to avail of the motherboard high-denition audio capability.
• If you want to connect a high denition front panel audio module to this connector, set
the Front Panel Type item in the BIOS to [HD]. See section 2.5.5 Onboard Devices
Conguration for details.
• The front panel audio I/O module is purchased separately.
7. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either High Denition Audio or AC`97 audio standard. Connect one end of the front
panel audio I/O module cable to this connector.
SPDIF_OUT
+5V
SPDIFOUT
GND
F2A55-M LE
F2A55-M LE Digital audio connector
F2A55-M LE
F2A55-M LE Front panel audio connector
AAFP
AGND
NC
SENSE1_RETUR
SENSE2_RETUR
PORT1 L
PORT1 R
PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
PIN 1
AGND
NC
NC
NC
MIC2
MICPWR
Line out_R
NC
Line out_L
Legacy AC’97
compliant definition
ASUS F2A55-M LE 1-27
8. USB 2.0 connectors (10-1 pin USB56, USB78, USB910)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specication that supports up to
480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
F2A55-M LE
F2A55-M LE USB2.0 connectors
USB+5V
USB_P10-
USB_P10+
GND
NC
USB+5V
USB_P9-
USB_P9+
GND
USB910
PIN 1
USB+5V
USB_P8-
USB_P8+
GND
NC
USB+5V
USB_P7-
USB_P7+
GND
USB78
PIN 1
USB+5V
USB_P6-
USB_P6+
GND
NC
USB+5V
USB_P5-
USB_P5+
GND
USB56
PIN 1
9. LPT connector (26-1 pin LPT)
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT
standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible
computers.
F2A55-M LE
F2A55-M LE Parallel Port Connector
PIN 1
LPT
STB#
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK#
BUSY
PE
SLCT
AFD
ERR#
INIT#
SLIN#
GND
GND
GND
GND
GND
GND
GND
GND
Chapter 1: Product introduction
1-28
10. Serial port connector (10-1 pin COM)
This connector is for a serial (COM) port. Connect the serial port module cable to this
connector, then install the module to a slot opening at the back of the system chassis.
The COM module is purchased separately.
F2A55-M LE
F2A55-M LE Serial port (COM) connector
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
ASUS F2A55-M LE 1-29
1.9 Software support
1.9.1 Installing an operating system
This motherboard supports Windows® XP / Vista / Windows® 7 / Windows® 8 Operating
Systems (OS). Always install the latest OS version and corresponding updates to maximize
the features of your hardware.
• Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.
• Ensure that you install Windows® XP Service Pack 3 or later versions / Windows®
Vista Service Pack 1 or later versions before installing the drivers for better
compatibility and system stability.
• BIOS and drivers updates are required to support Windows® 8.
1.9.2 Support DVD information
The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.
The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.
To run the Support DVD
Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD
automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and
Contact tabs to display their respective menus.
If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to
locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.
Click an item to install
Click an icon to display
Support DVD/motherboard
information
The following screen is for reference only.
Chapter 1: Product introduction
1-30
Chapter 2: BIOS information 2-1
2.1 Managing and updating your BIOS
Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to
restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.
2.1.1 ASUS Update utility
The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment.
• ASUS Update requires an Internet connection either through a network or an Internet
Service Provider (ISP).
• This utility is available in the support DVD that comes with the motherboard package.
Installing ASUS Update
To install ASUS Update:
1. Place the support DVD in the optical drive. The Specials menu appears.
2. Click the Utilities tab, then click AI Suite II.
3. Follow the onscreen instructions to complete the installation.
Quit all Windows® applications before you update the BIOS using this utility.
Updating the BIOS
To update the BIOS:
1. From the Windows® desktop, click Start > Programs > ASUS > AI Suite II > AI Suite
II X.XX.XX to launch the AI Suite II utility. The AI Suite II Quick Bar appears.
2. Click Update button from the Quick Bar, and then click ASUS Update from the popup
menu. The ASUS Update main screen appears. From the list, select either of the
following methods:
BIOS information
2
2-2 ASUS F2A55-M LE
Updating from the Internet
a. Select Update BIOS from the Internet, then click Next.
b. Select the ASUS FTP site nearest you to avoid network trafc, then click Next.
c. From the FTP site, select the BIOS version that you wish to download then click
Next.
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
Updating from a BIOS file
a. Select Update BIOS from le, then click Next.
b. Locate the BIOS le from the Open window, then click Open.
3. Follow the onscreen instructions to complete the updating process.
2.1.2 ASUS EZ Flash 2
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.
Before you start using this utility, download the latest BIOS le from the ASUS website at
www.asus.com.
To update the BIOS using EZ Flash 2:
1. Insert the USB ash disk that contains the latest BIOS le to the USB port.
2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select
ASUS EZ Flash 2 Utility and press <Enter> to enable it.
3. Press <Tab> to switch to the Drive eld.
4. Press the Up/Down arrow keys to nd the USB ash disk that contains the latest BIOS,
and then press <Enter>.
5. Press <Tab> to switch to the Folder Info eld.
6. Press the Up/Down arrow keys to nd the BIOS le, and then press <Enter> to perform
the BIOS update process. Reboot the system when the update process is done.
• This function supports USB ash disks formatted using FAT 32/16 on a single partition
only.
• DO NOT shut down or reset the system while updating the BIOS to prevent system
boot failure!
Chapter 2: BIOS information 2-3
2.1.3 ASUS CrashFree BIOS 3 utility
The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le
when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS
le using the motherboard support DVD or a USB ash drive that contains the updated BIOS
le.
• Before using this utility, rename the BIOS le in the removable device into
F2A55-M-LE-ASUS-5003.CAP.
• The BIOS le in the support DVD may not be the latest version. Download the latest
BIOS le from the ASUS website at www.asus.com.
Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the support DVD to the optical drive or the USB ash drive that contains the
BIOS le to the USB port.
3. The utility automatically checks the devices for the BIOS le. When found, the utility
reads the BIOS le and enters ASUS EZ Flash 2 utility automatically.
4. The system requires you to enter BIOS Setup to recover BIOS setting. To ensure
system compatibility and stability, we recommend that you press <F5> to load default
BIOS values.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
2-4 ASUS F2A55-M LE
Welcome to FreeDOS (http://www.freedos.org)!
C:\>d:
D:\>
3. When the Make Disk menu appears, select the FreeDOS command prompt item by
pressing the item number.
4. At the FreeDOS prompt, type d: and press <Enter> to switch the disk from Drive C
(optical drive) to Drive D (USB ash drive).
Please select boot device:
SATA: XXXXXXXXXXXXXXXX
USB XXXXXXXXXXXXXXXXX
UEFI: XXXXXXXXXXXXXXXX
Enter Setup
 ↑and ↓ to move selection
ENTER to select boot device
ESC to boot using defaults
2.1.4 ASUS BIOS Updater
The ASUS BIOS Updater allows you to update BIOS in DOS environment. This utility also
allows you to copy the current BIOS le that you can use as a backup when the BIOS fails or
gets corrupted during the updating process.
The succeeding utility screens are for reference only. The actual utility screen displays may
not be same as shown.
Before updating BIOS
1. Prepare the motherboard support DVD and a USB ash drive in FAT32/16 format and
single partition.
2. Download the latest BIOS le and BIOS Updater from the ASUS website at
http://support.asus.com and save them on the USB ash drive.
NTFS is not supported under DOS environment. Do not save the BIOS le and BIOS
Updater to a hard disk drive or USB ash drive in NTFS format.
3. Turn off the computer and disconnect all SATA hard disk drives (optional).
Booting the system in DOS environment
1. Insert the USB ash drive with the latest BIOS le and BIOS Updater to the USB port.
2. Boot your computer. When the ASUS Logo appears, press <F8> to show the BIOS
Boot Device Select Menu. Insert the support DVD into the optical drive and select the
optical drive as the boot device.
Chapter 2: BIOS information 2-5
Updating the BIOS le
To update the BIOS le using BIOS Updater
1. At the FreeDOS prompt, type bupdater /pc /g and press <Enter>.
ASUSTek BIOS Updater for DOS V1.30
Current ROM Update ROM
A:
Note
[Enter] Select or Load [Tab] Switch [V] Drive Info
[Up/Down/Home/End] Move [B] Backup [Esc] Exit
F2A55-M-LE-ASUS-5003.CAP 83656 2012-07-09 1:13:03
PATH: A:\
BOARD: F2A55-M LE
VER: 5003
DATE: 07/06/2012
BOARD: Unknown
VER: Unknown
DATE: Unknown
D:\>bupdater /pc /g
2. The BIOS Updater screen appears as below.
3. Press <Tab> to switch between screen elds and use the <Up/Down/Home/End> keys
to select the BIOS le and press <Enter>. BIOS Updater checks the selected BIOS le
and prompts you to conrm BIOS update.
Are you sure to update BIOS?
Yes No
4. Select Yes and press <Enter>. When BIOS update is done, press <ESC> to exit BIOS
Updater. Restart your computer.
DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure!
• For BIOS Updater version 1.30 or later, the utility automatically exits to the DOS
prompt after updating BIOS.
• Ensure to load the BIOS default settings to ensure system compatibility and stability.
Select the Load Optimized Defaults item under the Exit menu. Refer to section 2.9
Exit menu for details.
• Ensure to connect all SATA hard disk drives after updating the BIOS le if you have
disconnected them.
2-6 ASUS F2A55-M LE
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from
a running operating system can cause damage to your data or system. We recommend to
always shut down the system properly from the operating system.
2.2 BIOS setup program
Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS
screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.
Entering BIOS Setup at startup
To enter BIOS Setup at startup:
• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>,
POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Del> simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you
failed to enter BIOS Setup using the rst two options.
• The BIOS setup screens shown in this section are for reference purposes only, and
may not exactly match what you see on your screen.
• Ensure that a USB mouse is connected to your motherboard if you want to use the
mouse to control the BIOS setup program.
• The default BIOS settings for this motherboard apply for most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select
the Load Optimized Defaults item under the Exit Menu. See section 2.9 Exit Menu.
• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and
reset the motherboard to the default value. Refer to section 1.7 Jumpers on how to
erase the RTC RAM.
• The BIOS setup program does not support the bluetooth devices.
BIOS menu screen
The BIOS setup program can be used under two modes: EZ Mode and Advanced Mode.
You can change modes from the Exit menu or from the Exit/Advanced Mode button in the
EZ Mode/Advanced Mode screen.
Chapter 2: BIOS information 2-7
EZ Mode
By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ
Mode provides you an overview of the basic system information, and allows you to select
the display language, system performance mode and boot device priority. To access the
Advanced Mode, click Exit/Advanced Mode, then select Advanced Mode or press F7 hot
key for the advanced BIOS settings.
The default screen for entering the BIOS setup program can be changed. Refer to the
Setup Mode item in section 2.7 Boot menu for details.
• The boot device options vary depending on the devices you installed to the system.
• The Boot Menu(F8) button is available only when the boot device is installed to the
system.
Selects boot
device priority
Displays system
properties of the
selected mode
Silent
mode
Standard
mode
Selects boot
device priority
Loads optimized
default
Displays the CPU/
motherboard temperature,
CPU voltage output, and
CPU/chassis fan speed
Selects the display
language
Exits the BIOS setup program
without saving the changes, saves
the changes and resets the system,
or enters the Advanced Mode
Turbo mode
2-8 ASUS F2A55-M LE
Advanced Mode
The Advanced Mode provides advanced options for experienced end-users to congure
the BIOS settings. The gure below shows an example of the Advanced Mode. Refer to the
following sections for the detailed congurations.
To access the EZ Mode, click Exit, then select ASUS EZ Mode.
Menu bar
The menu bar on top of the screen has the following main items:
Main For changing the basic system conguration
Ai Tweaker For changing the overclocking settings
Advanced For changing the advanced system settings
Monitor For displaying the system temperature, power status, and changing the fan settings
Boot For changing the system boot conguration
Tool For conguring options for special functions
Exit For selecting the exit options and loading default settings
Navigation keys
General help
Menu bar
Submenu
Conguration elds
Menu items
Scroll bar
Pop-up window
Chapter 2: BIOS information 2-9
Menu items
The highlighted item on the menu bar displays the specic items for that menu. For example,
selecting Main shows the Main menu items.
The other items (Ai Tweaker, Advanced, Monitor, Boot, Tool, and Exit) on the menu bar have
their respective menu items.
Back button
This button appears when entering a submenu. Press <Esc> or use the USB mouse to click
this button to return to the previous menu screen.
Submenu items
A greater than sign (>) before each item on any menu screen means that the item has a
submenu. To display the submenu, select the item and press <Enter> or double-click the
item.
Pop-up window
Select a menu item and press <Enter> to display a pop-up window with the conguration
options for that item.
Scroll bar
A scroll bar appears on the right side of a menu screen when there are items that do not t on
the screen. Press the Up/Down arrow keys or <Page Up> / <Page Down> keys to display the
other items on the screen.
Navigation keys
At the bottom right corner of the menu screen are the navigation keys for the BIOS setup
program. Use the navigation keys to select items in the menu and change the settings.
General help
At the top right corner of the menu screen is a brief description of the selected item.
Conguration elds
These elds show the values for the menu items. If an item is user-congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not user-
congurable.
A congurable eld is highlighted when selected. To change the value of a eld, select it and
press <Enter> or click on it to display a list of options.
2-10 ASUS F2A55-M LE
2.3 Main menu
The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup
program. The Main menu provides you an overview of the basic system information, and
allows you to set the system date, time, language, and security settings.
2.3.1 System Language [English]
Allows you to choose the BIOS language version from the options. Conguration options:
[English] [Français] [Español] [Deutsch] [Русский]
2.3.2 System Date [Day xx/xx/xxxx]
Allows you to set the system date.
2.3.3 System Time [xx:xx:xx]
Allows you to set the system time.
2.3.4 Security
The Security menu items allow you to change the system security settings.
• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)
RAM to clear the BIOS password. See section 1.7 Jumpers for information on how to
erase the RTC RAM.
• The Administrator or User Password items on top of the screen show the default
Not Installed. After you set a password, these items show Installed.
Chapter 2: BIOS information 2-11
Administrator Password
If you have set an administrator password, we recommend that you enter the administrator
password for accessing the system. Otherwise, you might be able to see or change only
selected elds in the BIOS setup program.
To set an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Conrm the password when prompted.
To change an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Conrm the password when prompted.
To clear the administrator password, follow the same steps as in changing an administrator
password, but press <Enter> when prompted to create/conrm the password. After you clear
the password, the Administrator Password item on top of the screen shows Not Installed.
User Password
If you have set a user password, you must enter the user password for accessing the system.
The User Password item on top of the screen shows the default Not Installed. After you set
a password, this item shows Installed.
To set a user password:
1. Select the User Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Conrm the password when prompted.
To change a user password:
1. Select the User Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Conrm the password when prompted.
To clear the user password, follow the same steps as in changing a user password, but press
<Enter> when prompted to create/conrm the password. After you clear the password, the
User Password item on top of the screen shows Not Installed.
2-12 ASUS F2A55-M LE
2.4 Ai Tweaker menu
The Ai Tweaker menu items allow you to congure overclocking-related items.
Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect eld
values can cause the system to malfunction.
The conguration options for this section vary depending on the CPU and DIMM model you
installed on the motherboard.
Target CPU Speed : xxxxMHz
Displays the current CPU speed.
Target DRAM Speed : xxxxMHz
Displays the current DRAM speed.
2.4.1 Ai Overclock Tuner [Auto]
Allows you to select the CPU overclocking options to achieve the desired CPU internal
frequency. Select any of these preset overclocking conguration options:
[Auto] Loads the optimal settings for the system.
[Manual] Allows you to individually set overclocking parameters.
APU Frequency [XXX]
This item appears only when you set the Ai Overclock Tuner item to [Manual]. Use the <+>
and <-> keys to adjust the value. You can also key in the desired value using the numeric
keypad. The values range from 90.0MHz to 300.0MHz.
Chapter 2: BIOS information 2-13
2.4.2 Memory Frequency [Auto]
Allows you to set the memory operating frequency. Conguration options: [Auto] [DDR3-
800MHz] [DDR3-1066MHz] [DDR3-1333MHz] [DDR3-1600MHz] [DDR3-1866MHz] [DDR3-
2133MHz] [DDR3-2400MHz]
Selecting a very high memory frequency may cause the system to become unstable! If this
happens, revert to the default setting.
2.4.3 APU Multiplier [Auto]
Allows you to set the multiplier between the CPU Core Clock and the FSB Frequency. Use
the <+> and <-> keys to adjust the ratio. The valid value ranges vary according to your CPU
model.
2.4.4 NB Frequency [Auto]
Allows you to adjust the NB frequency. Use the <+> and <-> keys to adjust the value. You
can also key in the desired value using the numeric keypad.
2.4.5 EPU Power Saving Mode [Disabled]
Allows you to enable or disable the EPU power saving function. Conguration options:
[Disabled] [Enabled]
EPU Setting [Auto]
This item appears only when The EPU Power Saving Mode is set to [Enabled] and
allows you to set power saving mode. Conguration options: [Auto] [Light Power
Saving Mode] [Medium Power Saving Mode] [Max Power Saving Mode]
2.4.6 GPU Boost [Auto]
[Auto] Automatic conguration.
[Turbo Mode] Set to [Trubo Mode] to achieve better 3D performance.
[Extreme Mode] Set to [Extreme Mode] for the excellent visual experience.
[Manual Mode] Set to [Manual Mode] if you want to manually select the desired GPU
Engine frequency.
The following item appears only when you set the GPU Boost item to [Manual Mode].
GPU Engine Frequency [Auto]
Allows you to set the GPU Engine Frequency. Conguration options: [Auto] [GPU O.C.
434MHz] [GPU O.C. 447MHz] [GPU O.C. 460MHz] [GPU O.C. 475MHz] ~ [GPU O.C.
1381MHz] [GPU O.C. 1520MHz] [GPU O.C. 1688MHz] [GPU O.C. 1900MHz]
2-14 ASUS F2A55-M LE
2.4.7 OC Tuner
OC Tuner automatically overclocks the frequency and voltage of CPU and DRAM for
enhancing the system performance. Press <Enter> and select OK to start automatic
overclocking.
2.4.8 DRAM Timing Control
The sub-items in this menu allow you to set the DRAM timing control features. Use the <+>
and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard
and press <Enter>.
Changing the values in this menu may cause the system to become unstable! If this
happens, revert to the default settings.
2.4.9 CPU Voltage [Offset Mode]
[Offset Mode] To offset the voltage by a positive or negative value.
CPU Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU Offset Voltage [Auto]
Allows you to set the CPU Offset voltage. The values range from 0.00625V to 0.325V
with a 0.00625V interval.
Refer to the CPU documentation before setting the CPU voltage. Setting a high voltage
may damage the CPU permanently, and setting a low voltage may make the system
unstable.
VDDNB Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
VDDNB Offset Voltage [Auto]
Allows you to set the VDDNB Offset voltage. The values range from 0.00625V to
0.500V with a 0.00625V interval.
2.4.10 DRAM Voltage [Auto]
Allows you to set the DRAM voltage. The values range from 1.35V to 2.00V with a 0.005V
interval.
2.4.11 SB 1.1V Voltage [Auto]
Allows you to set the Southbridge 1.1V voltage. The values range from 1.1V to 1.4V with a
0.01V interval.
Chapter 2: BIOS information 2-15
2.4.12 1.1Vsb Voltage [Auto]
Allows you to set the 1.1Vsb voltage. The values range from 1.1000V to 1.4000V with a 0.1V
interval.
2.4.13 APU1.2V Voltage [Auto]
Allows you to set the APU (Accelerated Processor Unit) 1.2V voltage. The values range from
1.2000V to 1.8000V with a 0.01V interval.
2.4.14 VDDA Voltage [Auto]
Allows you to set the VDDA voltage. The values range from 2.5000V to 2.8000V with a 0.1V
interval.
• The values of the CPU Offset Voltage, VDDNB Offset Voltage, DRAM Voltage,
SB 1.1V Voltage, 1.1Vsb Voltage, APU1.2V Voltage, and VDDA Voltage items are
labeled in different color, indicating the risk levels of high voltage settings.
• The system may need better cooling system to work stably under high voltage
settings.
2.4.15 DIGI + VRM
CPU Load Line Calibration [Auto]
Load-line Calibration is dened by AMD VRM specications and affects CPU voltage. The
CPU working voltage will decrease proportionally to CPU loading. Higher load-line calibration
would get higher voltage and better overclocking performance, but increase the CPU and
VRM thermal. This item allows you to adjust the voltage range from the following percentages
to boost the system performance: 0% (Regular), 60% (Medium), 80% (High), and 100%
(Extreme). Conguration options: [Auto] [Regular] [Medium] [High] [Extreme]
The actual performance boost may vary depending on your CPU speciation.
CPU/NB Load Line Calibration [Auto]
Allows you to select the CPU/NB Load-Line Calibration mode. Conguration options: [Auto]
[Regular] [High] [Extreme]
CPU Current Capability [100%]
This item provides wider total power range for overclocking. A higher value brings a
wider total power range and extends the overclocking frequency range simultaneously.
Conguration options: [100%] [110%] [120%] [130%]
2-16 ASUS F2A55-M LE
CPU/NB Current Capability [100%]
This item provides wider total power range for overclocking. A higher value brings a
wider total power range and extends the overclocking frequency range simultaneously.
Conguration options: [100%] [110%] [120%] [130%]
CPU Power Phase Control [Standard]
Phase number is the number of working VRM phase. Increasing phase number under heavy
system loading to get more transient and better thermal performance. Reducing phase
number under light system loading to increase VRM efciency.
[Standard] Proceeds phase control depending on the CPU loading.
[Optimized] Loads the ASUS optimized phase tuning prole.
[Extreme] Proceeds the full phase mode.
[Manual Adjustment] Allows manual adjustment.
CPU Voltage Frequency [Auto]
Switching frequency will affect the VRM transient response and component thermal. Setting
a higher frequency gets faster transient response. Conguration options: [Auto] [Normal]
[Medium] [High] [Extreme]
CPU Power Duty Control [T.Probe]
[T.Probe] Maintains the VRM thermal balance.
[Extreme] Maintains the VRM current balance.
Do not remove the thermal module while changing the DIGI+VRM related parameters. The
thermal conditions should be monitored.
Chapter 2: BIOS information 2-17
Be cautious when changing the settings of the Advanced menu items. Incorrect eld values
can cause the system to malfunction.
2.5 Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
2.5.1 CPU Conguration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
The items shown in submenu may be different due to the CPU you installed.
AMD PowerNow function [Enabled]
Enables or disables the AMD PowerNow function. Conguration options: [Enabled] [Disabled]
NX Mode [Enabled]
Enables or disables the No-execute page protection function. Conguration options:
[Enabled] [Disabled]
SVM [Enabled]
Enables or disables CPU virtualization. Conguration options: [Disabled] [Enabled]
2-18 ASUS F2A55-M LE
2.5.2 SATA Conguration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA Port items show Not Present if no SATA device is installed to the corresponding SATA
port.
OnChip SATA Channel [Enabled]
Enables or disables onboard channel SATA port. Conguration options: [Disabled] [Enabled]
OnChip SATA Type [AHCI]
Allows you to set the SATA conguration.
[IDE] Set to [IDE] when you want to use the Serial ATA hard disk drives as
Parallel ATA physical storage devices.
[RAID] Set to [RAID] when you want to create a RAID conguration from the SATA
hard disk drives.
[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the AHCI
(Advanced Host Controller Interface). The AHCI allows the onboard storage
driver to enable advanced Serial ATA features that increases storage
performance on random workloads by allowing the drive to internally
optimize the order of commands.
S.M.A.R.T. Status Check [Enabled]
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a monitor system. When
read/write of your hard disk errors occur, this feature allows the hard disk to report warning
messages during the POST. Conguration options: [Enabled] [Disabled]
CPB Mode [Auto]
Disables the CPB (Core Performance Boost) mode or set it to [Auto] for automatic
conguration. Conguration options: [Disabled] [Auto]
C6 Mode [Disabled]
Enables or disables C6 mode. Conguration options: [Enabled] [Disabled]
IOMMU [Disabled]
Set this item to [Enabled] to show IOMMU Mode. Conguration options: [Enabled] [Disabled]
Chapter 2: BIOS information 2-19
2.5.3 USB Conguration
The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
Legacy USB Support [Enabled]
[Enabled] Enables the support for USB devices on legacy operating systems (OS).
[Disabled] The USB devices can be used only for the BIOS setup program.
[Auto] Allows the system to detect the presence of USB devices at startup. If
detected, the USB controller legacy mode is enabled. If no USB device is
detected, the legacy USB support is disabled.
EHCI Hand-off [Disabled]
[Enabled] Enables the support for operating systems without an EHCI hand-off
feature.
[Disabled] Disables the function.
2.5.4 NB Conguration
IGFX Multi-Monitor [Disabled]
Enables or disables the Internal Graphics Device Multi-Monitor support for add-on VGA
devices. And the memory size of Internal Graphics Device will keep memory reserved.
Conguration options: [Disabled] [Enabled]
The IGFX Multi-Monitor item must be enabled before using AMD® Dual Graphics and
LucidLogix Virtu MVP technologies.
Primary Video Device [PCIE / PCI Video]
Selects the primary display device. Conguration options: [IGFX Video] [PCIE / PCI Video]
Integrated Graphics [Auto]
Enables the integrated graphics controller. Conguration options: [Auto] [Force]
2.5.5 Onboard Devices Conguration
HD Audio Device [Enabled]
[Enabled] Enables the High Denition Audio Controller.
[Disabled] Disables the controller.
The following two items appear only when you set the HD Audio Device item to [Enabled].
2-20 ASUS F2A55-M LE
Front Panel Type [HD]
Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or high-
denition audio depending on the audio standard that the front panel audio module supports.
[HD] Sets the front panel audio connector (AAFP) mode to high denition audio.
[AC97] Sets the front panel audio connector (AAFP) mode to legacy AC’97.
SPDIF Out Type [SPDIF]
[SPDIF] Sets to [SPDIF] for SPDIF audio output.
[HDMI] Sets to [HDMI] for HDMI audio output.
Realtek LAN Controller [Enabled]
[Enabled] Enables the Realtek LAN controller.
[Disabled] Disables the controller.
Realtek PXE OPROM [Disabled]
This item appears only when you set the Realtek LAN Controller item to [Enabled] and
allows you to enable or disable the Rom Help of the Realtek LAN controller. Conguration
options: [Enabled] [Disabled]
Serial Port Conguration
The sub-items in this menu allow you to set the serial port conguration.
Serial Port [Enabled]
Allows you to enable or disable the serial port (COM). Conguration options: [Enabled]
[Disabled]
Change Settings [IO=3F8h; IRQ=4]
Allows you to select the Serial Port base address. Conguration options: [IO=3F8h;
IRQ=4] [IO=2F8h; IRQ=3] [IO=3E8h; IRQ=4] [IO=2E8h; IRQ=3]
Parallel Port Conguration [Enabled]
The sub-items in this menu allow you to set the parallel port conguration.
Parallel Port [Enabled]
Allows you to enable or disable the parallel port (LPT/LPTE).
Conguration options: [Enabled] [Disabled]
Change Settings [Auto]
Allows you to select the Parallel Port base address.
Conguration options: [IO=378h; IRQ=5] [IO=378h; IRQ=5,6,7,9,10,11,12]
[IO=278h; IRQ=5,6,7,9,10,11,12] [IO=3BCh; IRQ=5,6,7,9,10,11,12]
Device Mode [Auto]
Allows you to set the Printer port mode. Conguration options: [STD Printer Mode]
[SPP Mode] [EPP-1.9 and SPP Mode] [EPP-1.7 and SPP Mode]
Chapter 2: BIOS information 2-21
2.5.6 APM
Restore AC Power Loss [Power Off]
[Power On] The system goes into on state after an AC power loss.
[Power Off] The system goes into off state after an AC power loss.
[Last State] The system goes into either off or on state, whatever the system state was
before the AC power loss.
Power On By PS/2 Keyboard [Disabled]
[Disabled] Disables the Power On by a PS/2 keyboard.
[Space Bar] Sets the Space Bar on the PS/2 keyboard to turn on the system.
[Ctrl-Esc] Sets the Ctrl+Esc key on the PS/2 keyboard to turn on the system.
[Power Key] Sets Power key on the PS/2 keyboard to turn on the system. This feature
requires an ATX power supply that provides at least 1A on the +5VSB lead.
Power On By PS/2 Mouse [Disabled]
[Disabled] Disables the Power On by a PS/2 mouse.
[Enabled] Enables the Power On by a PS/2 mouse. This feature requires an ATX
power supply that provides at least 1A on the +5VSB lead.
Power On By PME [Disabled]
[Disabled] Disables the PME to wake up by PCI/PCIE devices.
[Enabled] Allows you to turn on the system through a PCI/PCIE LAN or modem card.
This feature requires an ATX power supply that provides at least 1A on the
+5VSB lead.
Power On By Ring [Disabled]
[Disabled] Disables Ring to generate a wake event.
[Enabled] Enables Ring to generate a wake event.
Power On By RTC [Disabled]
[Disabled] Disables RTC to generate a wake event.
[Enabled] When set to [Enabled], the items RTC Alarm Date (Days) and Hour/
Minute/Second will become user-congurable with set values.
RTC Alarm Date (Days)
This item appears only when you set the previous item to [Enabled] and allows you
to select RTC alarm time (days). When you set the time to zero, the RTC alarms
everyday. Use <+> and <-> keys to adjust the time.
- Hour / - Mimute / - Second
Allows you to set the RTC alarm time. Use <+> and <-> keys to adjust the time.
2-22 ASUS F2A55-M LE
2.5.7 Network Stack
Network Stack [Disable Link]
This item allows user to disable or enable the UEFI network stack. Conguration options:
[Disable Link] [Enabled]
The following two items appear only when you set the Network Stack to [Enabled].
Ipv4 PXE Support [Enabled]
This item appears only when you set the Network Stack item to [Enabled]. When this item is
disabled, the IPV4 PXE boot option will not be created. Conguration options: [Disable Link]
[Enabled]
Ipv6 PXE Support [Enabled]
This item appears only when you set the Network Stack item to [Enabled]. When this item is
disabled, the IPV6 PXE boot option will not be created. Conguration options: [Disable Link]
[Enabled]
Chapter 2: BIOS information 2-23
2.6 Monitor menu
The Monitor menu displays the system temperature/power status, and allows you to change
the fan settings.
2.6.1 CPU Temperature / MB Temperature [xxxºC/xxxºF]
The onboard hardware monitor automatically detects and displays the CPU and motherboard
temperatures. Select Ignore if you do not wish to display the detected temperatures.
2.6.2 CPU_FAN / CHA_FAN / PWR_FAN Speed [xxxx RPM]
or [Ignore] / [N/A]
The onboard hardware monitor automatically detects and displays the CPU / chassis fan
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld
shows N/A. Select Ignore if you do not wish to display the detected speed.
2.6.3 CPU Q-Fan Control [Enabled]
[Disabled] Disables the CPU Q-Fan control feature.
[Enabled] Enables the CPU Q-Fan control feature.
CPU Fan Speed Low Limit [200 RPM]
This item appears only when you enable the CPU Q-Fan Control feature and allows
you to disable or set the CPU fan warning speed. Conguration options: [Ignore]
[200RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM]
2-24 ASUS F2A55-M LE
CPU Fan Profile [Standard]
This item appears only when you enable the CPU Q-Fan Control feature and allows
you to set the appropriate performance level of the CPU fan.
[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending on
the CPU temperature.
[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.
[Turbo] Sets to [Turbo] to achieve maximum CPU fan speed.
[Manual] Sets to [Manual] to assign detailed fan speed control parameters.
The following four items appear only when you set CPU Prole to [Manual].
CPU_FAN Upper Temperature [70ºC]
Use the <+> and <-> keys to adjust the upper limit of the CPU temperature. The values range
from 20ºC to 90ºC.
CPU_FAN Fan Max. Duty Cycle(%) [100%]
Use the <+> and <-> keys to adjust the maximum CPU fan duty cycle. The values range from
40% to 100%. When the CPU temperature reaches the upper limit, the CPU fan will operate at
the maximum duty cycle.
CPU_FAN Lower Temperature [20ºC]
Displays the lower limit of the CPU temperature.
CPU_FAN Fan Min. Duty Cycle(%) [40%]
Use the <+> and <-> keys to adjust the minimum CPU fan duty cycle. The values range from
40% to 100%. When the CPU temperature is under the lower limit, the CPU fan will operate at
the minimum duty cycle.
2.6.4 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators. Select Ignore if you do not want to detect this item.
2.6.5 Anti Surge Support [Enabled]
This item allows you to enable or disable the Anti Surge function. Conguration options:
[Disabled] [Enabled]
Chapter 2: BIOS information 2-25
2.7 Boot menu
The Boot menu items allow you to change the system boot options.
Scroll to view the following additional items:
2-26 ASUS F2A55-M LE
2.7.1 Bootup NumLock State [On]
[On] Sets the power-on state of the NumLock to [On].
[Off] Sets the power-on state of the NumLock to [Off].
2.7.2 Full Screen Logo [Enabled]
[Enabled] Enables the full screen logo display feature.
[Disabled] Disables the full screen logo display feature.
Set this item to [Enabled] to use the ASUS MyLogo 2™ feature.
Post Report [5 sec]
This item appears only when the Full Screen Logo item is set to [Disabled] and allows you to
set the waiting time for the system to display the post report. Conguration options: [1 sec] [2
sec] [3 sec] [4 sec] [5 sec] [6 sec] [7 sec] [8 sec] [9 sec] [10 sec] [Until Press ESC]
2.7.3 Fast Boot [Enabled]
Enable or disable boot with initialization of a minimal set of devices to launch active boot
option. Conguration options: [Disabled] [Enabled]
The following three items appear only when you set Fast Boot to [Enabled].
USB Support [Partial Initial]
[Disabled] All USB devices will not be available until after OS boot.
[Full Initial] All USB devices will be available in OS and during POST.
[Partial Initial] Specic USB port/device will not be available before OS boot.
PS2 Devices Support [Enabled]
[Auto] Automatic conguration.
[Enabled] Allows the BIOS to boot from PS/2 devices.
Network Stack Driver Support [Disabled]
[Disabled] The BIOS skips over the Network Stack Driver and tries to boot from
the next device.
[Enabled] Allows the BIOS to boot from the Network Stack Driver.
2.7.4 Post Logo Delay Time [3 sec]
Allows you to set the waiting time for the system to display the post logo. Conguration
options: [0 sec] [1 sec] [2 sec] [3 sec] [4 sec] [5 sec] [6 sec] [7 sec] [8 sec] [9 sec] [10 sec]
2.7.5 Wait For ‘F1’ If Error [Enabled]
[Disabled] Disables this function.
[Enabled] The system waits for the <F1> key to be pressed when error occurs.
Chapter 2: BIOS information 2-27
2.7.6 Option ROM Messages [Force BIOS]
[Force BIOS] The third-party ROM messages will be forced to display during the boot
sequence.
[Keep Current] The third-party ROM messages will be displayed only if the third-party
manufacturer had set the add-on device to do so.
2.7.7 Next boot after AC Power Loss [Normal Boot]
[Normal Boot] Returns to normal boot on the next boot after an AC power loss.
[Fast Boot] Accelerates the boot speed on the next boot after an AC power loss.
2.7.8 CSM Parameters
This option controls whether or not CSM will be launched.
Launch CSM [Auto]
Conguration option: [Auto] [Enabled] [Disabled][Enabled] [Disabled]
The following four items appear only when you set Launch CSM to [Enabled].
Boot option filter [UEFI and Legacy]
Conguration option: [UEFI and Legacy] [Legacy only] [UEFI only]
Launch PXE OpROM policy [Legacy first]
Conguration option: [DO NOT launch] [Legacy rst] [UEFI rst]
Launch Storage OpROM policy [Legacy first]
Conguration option: [DO NOT launch] [Both, Legacy rst] [Both, UEFI rst] [Legacy
rst] [UEFI rst]
Other device ROM priority [Legacy first]
Conguration option: [Legacy rst] [UEFI rst][Legacy rst] [UEFI rst]
2.7.9 Security Boot parameters
This option allows you to congure the Secure Boot related parameters.
OS Type [Other Legacy & UEFI]
Conguration option: [Windows 8 UEFI] [Other Legacy & UEFI]
Secure Boot Mode [Standard]
This item appears only when you set the OS Type to [Windows 8 UEFI]. Conguration
option: [Standard] [Custom]
The following items appear when Secure Boot Mode is set to [Custom].
2-28 ASUS F2A55-M LE
Image Execution Policy
Internal FV [Always Execute]
Conguration options: [Always Execute]
Option ROM [Deny Execute]
Conguration options: [Always Execute] [Always Deny] [Allow Execute] [Defer
Execute] [Deny Execute] [Query Execute]
Removable Media [Deny Execute]
Conguration options: [Always Execute] [Always Deny] [Allow Execute] [Defer
Execute] [Deny Execute] [Query Execute]
Fix Media [Deny Execute]
Conguration options: [Always Execute] [Always Deny] [Allow Execute] [Defer
Execute] [Deny Execute] [Query Execute]
Key Management
Default Key Provisioning [Disabled]
Conguration options: [Enabled] [Disabled]
Manage All Factory Keys (PK, KEK, DB, DBX)
Install default Secure Boot Keys
Conguration options: [Yes] [No]
Platform Key (PK)
Set PK from File
Conguration options: [Acpi (a0341d0, 0)\PCI (1212)\USB (2, 0)\]
Get PK to File
Conguration options: [OK]
Delete the PK
Conguration options: [Yes] [No]
Key Exchange Key Database (KEK)
Set KEK from File
Conguration options: [OK]
Get KEK to File
Conguration options: [OK]
Delete the KEK
Conguration options: [Yes] [No]
Append an entry to KEK
Conguration options: [OK]
Authorized Signature Database
Set DB from File
Conguration options: [OK]
Get DB to File
Conguration options: [OK]
Chapter 2: BIOS information 2-29
2.7.10 Setup Mode [EZ Mode]
[Advanced Mode] Sets Advanced Mode as the default screen for entering the BIOS setup
program.
[EZ Mode] Sets EZ Mode as the default screen for entering the BIOS setup program.
2.7.11 Boot Option Priorities
These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices
installed in the system.
• To select the boot device during system startup, press <F8> when ASUS Logo
appears.
• To access Windows OS in Safe Mode, press <F8> after POST.
2.7.12 Boot Override
These items displays the available devices. The number of device items that appears on
the screen depends on the number of devices installed in the system. Click an item to start
booting from the selected device.
Delete the DB
Conguration options: [Yes] [No]
Append an entry to DB
Conguration options: [OK]
Forbidden Signature Database
Set DBX from File
Conguration options: [OK]
Get DBX to File
Conguration options: [OK]
Delete the DBX
Conguration options: [Yes] [No]
Append an entry to DBX
Conguration options: [OK]
2-30 ASUS F2A55-M LE
2.8 Tools menu
The Tools menu items allow you to congure options for special functions. Select an item
then press <Enter> to display the submenu.
2.8.1 ASUS EZ Flash 2 Utility
Allows you to run ASUS EZ Flash 2. Press [Enter] to launch the ASUS EZ Flash 2 screen.
For more details, see section 2.1.2 ASUS EZ Flash 2.
2.8.3 ASUS O.C. Prole
This item allows you to store or load multiple BIOS settings.
The Setup Prole Status items show Not Installed if no prole is created.
Label
Allows you to input the label of the setup prole.
Save to Prole
Allows you to save the current BIOS settings to the BIOS Flash, and create a prole. Key in a
prole number from one to eight, press <Enter>, and then select Yes.
Load from Prole
Allows you to load the previous BIOS settings saved in the BIOS Flash. Key in the prole
number that saved your CMOS settings, press <Enter>, and then select Yes.
• DO NOT shut down or reset the system while updating the BIOS to prevent the
system boot failure!
• We recommend that you update the BIOS le only coming from the same memory/
CPU conguration and BIOS version.
2.8.2 ASUS SPD Information
DIMM Slot # [DIMM_A1]
Displays the Serial Presence Detect (SPD) information of the DIMM module installed on the
selected slot. Conguration options: [DIMM_A1] [DIMM_B1]
Chapter 2: BIOS information 2-31
2.9 Exit menu
The Exit menu items allow you to load the optimal default values for the BIOS items, and
save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit
menu.
Load Optimized Defaults
This option allows you to load the default values for each of the parameters on the Setup
menus. When you select this option or if you press <F5>, a conrmation window appears.
Select Yes to load the default values.
Save Changes & Reset
Once you are nished making your selections, choose this option from the Exit menu to
ensure the values you selected are saved. When you select this option or if you press <F10>,
a conrmation window appears. Select Yes to save changes and exit.
Discard Changes & Exit
This option allows you to exit the Setup program without saving your changes. When youWhen you
select this option or if you press <Esc>, a conrmation window appears. Select Yes to
discard changes and exit..
ASUS EZ Mode
This option allows you to enter the EZ Mode screen.
Launch EFI Shell from lesystem device
This option allows you to attempt to launch the UEFI Shell application (shellx64.e) from one
of the available devices that have a lesystem.
2-32 ASUS F2A55-M LE
ASUS F2A55-M LE A-1
Appendices
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
This device may not cause harmful interference.
This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
•
•
•
•
•
•
IC: Canadian Compliance Statement
Complies with the Canadian ICES-003 Class B specications. This device complies with RSS
210 of Industry Canada. This Class B device meets all the requirements of the Canadian
interference-causing equipment regulations.
This device complies with Industry Canada license exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Cut appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada.
Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le
fonctionnement est soumis aux deux conditions suivantes :
(1) cet appareil ne doit pas provoquer d’interférences et
(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer
un fonctionnement non souhaité de l’appareil.
A-2 Appendices
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards
for protecting our environment. We believe in providing solutions for you to be able to
responsibly recycle our products, batteries, other components as well as the packaging
materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling
information in different regions.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
VCCI: Japan Compliance Statement
VCCI Class B Statement
KC: Korea Warning Statement
ASUS F2A55-M LE A-3
ASUS contact information
ASUSTeK COMPUTER INC.
Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259
Telephone +886-2-2894-3447
Fax +886-2-2890-7798
E-mail info@asus.com.tw
Web site www.asus.com.tw
Technical Support
Telephone +86-21-38429911
Online support support.asus.com
ASUS COMPUTER INTERNATIONAL (America)
Address 800 Corporate Way, Fremont, CA 94539, USA
Telephone +1-812-282-3777
Fax +1-510-608-4555
Web site usa.asus.com
Technical Support
Telephone +1-812-282-2787
Support fax +1-812-284-0883
Online support support.asus.com
ASUS COMPUTER GmbH (Germany and Austria)
Address Harkort Str. 21-23, D-40880 Ratingen, Germany
Fax +49-2102-959911
Web site www.asus.de
Online contact www.asus.de/sales
Technical Support
Telephone +49-1805-010923*
Support Fax +49-2102-9599-11
Online support support.asus.com
* EUR 0.14/minute from a German xed landline; EUR 0.42/minute from a mobile phone.
A-4 Appendices
DECLARATION OF CONFORMITY
Per FCC Part 2 Section 2. 1077(a)
Responsible Party Name: Asus Computer International
Address: 800 Corporate Way, Fremont, CA 94539.
Phone/Fax No: (510)739-3777/(510)608-4555
hereby declares that the product
Product Name : Motherboard
Model Number : F2A55-M LE
Conforms to the following specifications:
FCC Part 15, Subpart B, Unintentional Radiators
Supplementary Information:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Representative Person’s Name : Steve Chang / President
Signature :
Date : Jul. 13, 2012
Ver. 120601
EC Declaration of Conformity
We, the undersigned,
Manufacturer: ASUSTeK COMPUTER INC.
Address, City: 4F, No. 150, LI-TE Rd., PEITOU, TAIPEI 112, TAIWAN
Country: TAIWAN
Authorized representative in Europe: ASUS COMPUTER GmbH
Address, City: HARKORT STR. 21-23, 40880 RATINGEN
Country: GERMANY
declare the following apparatus:
Product name : Motherboard
Model name : F2A55-M LE
conform with the essential requirements of the following directives:
2004/108/EC-EMC Directive
EN 55022:2010
EN 61000-3-2:2006+A2:2009
EN 55013:2001+A1:2003+A2:2006
EN 55024:2010
EN 61000-3-3:2008
EN 55020:2007+A11:2011
1999/5/EC-R &TTE Directive
EN 300 328 V1.7.1(2006-10)
EN 300 440-1 V1.6.1(2010-08)
EN 300 440-2 V1.4.1(2010-08)
EN 301 511 V9.0.2(2003-03)
EN 301 908-1 V5.2.1(2011-05)
EN 301 908-2 V5.2.1(2011-07)
EN 301 893 V1.6.1(2011-11)
EN 302 544-2 V1.1.1(2009-01)
EN 302 623 V1.1.1(2009-01)
EN 300 330-1 V1.7.1(2010-02)
EN 300 330-2 V1.5.1(2010-02)
EN 50360:2001
EN 62479:2010
EN 301 489-1 V1.9.2(2011-09)
EN 301 489-3 V1.4.1(2002-08)
EN 301 489-4 V1.4.1(2009-05)
EN 301 489-7 V1.3.1(2005-11)
EN 301 489-9 V1.4.1(2007-11)
EN 301 489-17 V2.1.1(2009-05)
EN 301 489-24 V1.5.1(2010-09)
EN 302 326-2 V1.2.2(2007-06)
EN 302 326-3 V1.3.1(2007-09)
EN 301 357-2 V1.4.1(2008-11)
EN 50385:2002
EN 62311:2008
2006/95/EC-LVD Directive
EN 60950-1 / A11:2009
EN 60950-1 / A12:2011
EN 60065:2002 / A2:2010
EN 60065:2002 / A12:2011
2009/125/EC-ErP Directive
Regulation (EC) No. 1275/2008
Regulation (EC) No. 642/2009
Regulation (EC) No. 278/2009
2011/65/EU-RoHS Directive Ver. 121001
CE marking
Declaration Date: Dec. 10, 2012
Year to begin affixing CE marking:2012
Position : CEO
Name : Jerry Shen
Signature : __________
(EC conformity marking)

Navigation menu