Asus Computer Hardware P5G41T M LX PLUS Intel G41 Motherboard Manual

User Manual: Asus Computer Hardware P5G41T-M LX PLUS

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Notices
Safety information
About this guide
P5G41T-M LX specifications summary
Chapter 1
Product introduction
Chapter 2
BIOS information

Motherboard

P5G41T-M LX

E5198

First Edition V1

November 2009

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

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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

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owners’ benet, without intent to infringe.

Offer to Provide Source Code of Certain Software

This product may contain copyrighted software that is licensed under the General Public License (“GPL”)

and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this

product is distributed without any warranty. Copies of these licenses are included in this product.

You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,

and/or the complete corresponding source code of the LGPL Software (with the complete machine-

readable “work that uses the Library”) for a period of three years after our last shipment of the product

including the GPL Software and/or LGPL Software, which will be no earlier than December 1, 2011, either

(1) for free by downloading it from http://support.asus.com/download;

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where you want to have it shipped to, by sending a request to:

ASUSTeK Computer Inc.

Legal Compliance Dept.

15 Li Te Rd.,

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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

Notices ......................................................................................................... vi

Safety information ..................................................................................... vii

About this guide ........................................................................................ vii

P5G41T-M LX specications summary ..................................................... ix

Chapter 1: Product introduction

1.1 Welcome! ...................................................................................... 1-1

1.2 Package contents ......................................................................... 1-1

1.3 Special features ............................................................................ 1-1

1.3.1 Product highlights ........................................................... 1-1

1.3.2 Innovative ASUS features ............................................... 1-2

1.4 Before you proceed ..................................................................... 1-4

1.5 Motherboard overview ................................................................. 1-5

1.5.1 Placement direction ........................................................ 1-5

1.5.2 Screw holes .................................................................... 1-5

1.5.3 Motherboard layout ......................................................... 1-6

1.5.4 Layout contents ............................................................... 1-6

1.6 Central Processing Unit (CPU) ................................................... 1-7

1.6.1 Installing the CPU ........................................................... 1-7

1.6.2 Installing the CPU heatsink and fan .............................. 1-10

1.6.3 Uninstalling the CPU heatsink and fan ..........................1-11

1.7 System memory ......................................................................... 1-12

1.7.1 Overview ....................................................................... 1-12

1.7.2 Memory congurations .................................................. 1-13

1.7.3 Installing a DIMM .......................................................... 1-16

1.7.4 Removing a DIMM ........................................................ 1-16

1.8 Expansion slots .......................................................................... 1-17

1.8.1 Installing an expansion card ......................................... 1-17

1.8.2 Conguring an expansion card ..................................... 1-17

1.8.3 PCI slots ........................................................................ 1-17

1.8.4 PCI Express x1 slot ....................................................... 1-17

1.8.5 PCI Express x16 slot ..................................................... 1-17

1.9 Jumpers ...................................................................................... 1-18

1.10 Connectors ................................................................................. 1-20

1.10.1 Rear panel connectors .................................................. 1-20

1.10.2 Internal connectors ....................................................... 1-21

Contents

1.11 Software support ........................................................................ 1-27

1.11.1 Installing an operating system ...................................... 1-27

1.11.2 Support DVD information .............................................. 1-27

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 ................................................... 2-3

2.2 BIOS setup program .................................................................... 2-4

2.2.1 BIOS menu screen .......................................................... 2-5

2.2.2 Menu bar ......................................................................... 2-5

2.2.3 Navigation keys ............................................................... 2-6

2.2.4 Menu items ..................................................................... 2-6

2.2.5 Submenu items ............................................................... 2-6

2.2.6 Conguration elds ......................................................... 2-6

2.2.7 Pop-up window ............................................................... 2-6

2.2.8 Scroll bar ......................................................................... 2-6

2.2.9 General help ................................................................... 2-6

2.3 Main menu .................................................................................... 2-7

2.3.1 System Time ................................................................... 2-7

2.3.2 System Date ................................................................... 2-7

2.3.3 Primary IDE Master/Slave, SATA1~4 .............................. 2-7

2.3.4 Storage Conguration ..................................................... 2-8

2.3.5 System Information ......................................................... 2-9

2.4 Advanced menu ........................................................................... 2-9

2.4.1 JumperFree Conguration .............................................. 2-9

2.4.2 CPU Conguration .........................................................2-11

2.4.3 Chipset .......................................................................... 2-12

2.4.4 Onboard Devices Conguration .................................... 2-13

2.4.5 USB Conguration ........................................................ 2-14

2.4.6 PCI PnP ........................................................................ 2-15

2.5 Power menu ................................................................................ 2-15

2.5.1 Suspend Mode .............................................................. 2-15

2.5.2 ACPI 2.0 Support .......................................................... 2-15

2.5.3 ACPI APIC Support ....................................................... 2-15

Contents

2.5.4 Anti Surge Support ........................................................ 2-15

2.5.5 APM Conguration ........................................................ 2-16

2.5.6 Hardware Monitor ......................................................... 2-16

2.6 Boot menu .................................................................................. 2-17

2.6.1 Boot Device Priority ...................................................... 2-17

2.6.2 Boot Settings Conguration .......................................... 2-17

2.6.3 Security ......................................................................... 2-18

2.7 Tools menu ................................................................................. 2-20

2.7.1 ASUS EZ Flash 2 .......................................................... 2-20

2.7.2 Express Gate ................................................................ 2-20

2.7.3 AI NET 2........................................................................ 2-20

2.8 Exit menu .................................................................................... 2-21

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, and

• 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.

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.

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.

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.

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://green.asus.com/english/REACH.htm.

vii

Safety information

Electrical safety

• To prevent electric shock hazard, disconnect the power cable from the electric 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 that 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.

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.

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.

NOTE: Tips and additional information to help you complete a task.

IMPORTANT: Instructions that you MUST follow to complete a task.

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.

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 (+).

Example: <Ctrl>+<Alt>+<D>

P5G41T-M LX specications summary

(continued on the next page)

CPU LGA775 socket for Intel® Core™2 Quad / Core™2 Extreme

/ Core™2 Duo / Pentium® dual-core / Celeron® dual-core /

Celeron® processors

Compatible with Intel® 05B/05A/06 processors

Supports Intel® 45nm multi-core CPU

* Refer to www.asus.com for Intel® CPU support list.

Chipset Northbridge: Intel® G41

Southbridge: Intel® ICH7

Front Side Bus 1333/1066/800 MHz

Memory Dual channel memory architecture

- 2 x 240-pin DIMM sockets support unbuffered non-ECC

1333(O.C.)/1066/800 MHz DDR3 memory modules

- Supports up to 8GB system memory

* Refer to www.asus.com for the latest Memory QVL (Qualied

Vendors Lists).

** When you install a total memory of 4GB or more, Windows®

32-bit operating 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 Intel® GMA X4500 GPU

Maximum shared memory of 1G

Supports RGB with max. resolution of 2048 x 1536 (@ 75Hz)

Supports Microsoft® DirectX® 10

Expansion slots 1 x PCIe x16 slot

1 x PCIe x1 slot

2 x PCI slots

Storage 1 x Ultra DMA 100/66/33 connector

4 x Serial ATA 3Gb/s ports

LAN PCIe Gigabit LAN

Audio ALC887 High Denition Audio 8-channel CODEC

* Use the chassis with HD audio module in the front panel to

support 8-channel audio output.

Supports Jack-detection and Multi-Streaming technologies

Supports S/PDIF Out interface

USB Supports up to 8 USB 2.0/1.1 ports (4 ports at mid-board,

4 ports at the back panel)

ASUS exclusive

overclocking

features

SFS (Stepless Frequency Selection):

- FSB tuning from 200MHz to 800MHz at 1MHz increment

Overclocking Protection:

- ASUS C.P.R. (CPU Parameter Recall)

P5G41T-M LX specications summary

* Specications are subject to change without notice.

ASUS unique

features

ASUS CrashFree BIOS 3

ASUS AI NET 2

ASUS Q-Fan

ASUS EZ Flash 2

ASUS MyLogo 2

ASUS Anti-Surge Protection

ASUS Turbo Key

ASUS Express Gate

ASUS EPU-L

Back panel I/O ports 1 x PS/2 keyboard port

1 x PS/2 mouse port

1 x LPT port

1 x COM port

1 x VGA port

1 x LAN (RJ-45) port

4 x USB 2.0/1.1 ports

3 x audio jacks

Internal connectors 2 x USB 2.0/1.1 connectors support additional

4 USB 2.0/1.1 ports

1 x IDE connector

4 x Serial ATA connectors

1 x Front panel audio connector

1 x System panel connector

1 x S/PDIF Out connector

1 x Internal speaker connector

1 x CPU fan connector

1 x Chassis fan connector

1 x 24-pin EATX power connector

1 x 4-pin ATX 12V power connector

BIOS 8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a,

SM BIOS 2.5

Manageability WOL, PXE, WOR by Ring, PME Wake up

Accessories 1 x Ultra DMA 133/100/66 cable

2 x Serial ATA cables

1 x I/O shield

1 x User Manual

Support DVD Drivers

ASUS PC Probe II

ASUS Update

Anti-Virus software (OEM version)

Form factor uATX form factor: 9.6 in x 7.9 in (24.4 cm x 20.1 cm)

ASUS P5G41T-M LX 1-1

Chapter 1

Product introduction

Motherboard ASUS P5G41T-M LX motherboard

Cables 2 x Serial ATA cables

1 x Ultra DMA 133/100/66 cable

Accessories 1 x I/O shield

Application DVD ASUS motherboard support DVD

Documentation User Manual

If any of the above items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

Intel® Core™2 Extreme / Core™2 Quad / Core™2 Duo CPU

support

This motherboard supports Intel® LGA775 Core™ 2 Extreme / Core™

2 Quad/ Core™ 2 Duo processors, which are excellent for multitasking,

multimedia, and enthusiastic gamers with 1333/1066/800 MHz FSB.

This motherboard also supports Intel® CPUs in the 45nm manufacturing

process.

1.1 Welcome!

Thank you for buying an ASUS® P5G41T-M LX motherboard!

The motherboard delivers a host of new features and latest technologies, making it another

standout in the long line of ASUS quality motherboards!

Before you start installing the motherboard, and hardware devices on it, check the items in

your package with the list below.

1.2 Package contents

Check your motherboard package for the following items.

1-2 Chapter 1: Product introduction

Intel® G41 Chipset

The Intel® G41 Express Chipset is designed to support dual-channel

DDR3 1333 (overclocking)/1066/800 architecture, 1333/1066/800 Front

Side Bus (FSB), PCIe 1.1, and mutli-core CPUs. It especially includes

Intel® Fast memory bandwidth and reduces the latency of the memory

accesses.

Dual channel DDR3 1333 (O.C.)/1066/800 support

This motherboard supports DDR3 memory that features data transfer

rates of 1333 (O.C.)/1066/800 MHz providing great performance for 3D

graphics and other memory-demanding applications.

Serial ATA 3Gb/s technology

This motherboard supports hard drives based on the Serial ATA (SATA)

3Gb/s storage specications, delivering enhanced scalability and

doubling the bus bandwidth for high-speed data saving and retrieval.

Gigabit LAN solution

The onboard LAN controller is a highly integrated Gb LAN controller. It is

enhanced with an ACPI management function to provide efcient power

management for advanced operating systems.

1.3.2 Innovative ASUS features

ASUS EPU

ASUS EPU (Energy Processing Unit) provides total system power

management by detecting the current PC loading and intelligently

moderating power in real-time. It automatically provides the most

appropriate power usage to save power and money.

Turbo Key

ASUS Turbo Key allows you to turn the PC power button into

an overclocking button. After you easy setup, Turbo Key boosts

performances without interrupting ongoing work or games, simply through

pressing the button.

ASUS Q-FAN

ASUS Q-FAN technology intelligently and automatically adjusts CPU fan

speed according to system load and temperature, enabling users to work

in distraction-free environment with minimal noise.

ASUS Anti-Surge Protection

This special design prevents expensive devices and the motherboard

from damage caused by power surges from switching power supply

(PSU).

ASUS P5G41T-M LX 1-3

ASUS Express Gate

Express Gate is an ASUS exclusive OS, which lets you instantly access

the Internet and key applications before entering the Windows® OS.

• ASUS Express Gate supports installation on SATA HDDs, USB HDDs and ash

drives with at least 1.2GB free disk space. When installing it on USB HDDs or

ash drives, connect the drives to the motherboard USB port before turning on the

computer.

• The actual boot time depends on the system conguration.

• ASUS Express Gate supports le uploading from SATA HDDs, ODDs and USB

drives. It supports le downloading to USB drives only.

ASUS MyLogo2™

This feature allows you to convert your favorite photo into a 256-color

boot logo for a more colorful and vivid image on your screen.

ASUS CrashFree BIOS 3

ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to

restore a corrupted BIOS le using the bundled support DVD or USB

ash disk that contains the latest BIOS le.

ASUS EZ Flash 2

ASUS EZ Flash 2 is a utility that allows you to update the BIOS without

using an OS-based utility.

ASUS AI NET2

ASUS AI NET2 remotely detects the cable connection immediately after

turning on the system, and any faulty cable connections are reported

back up to 100 meters at 1 meter accuracy.

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.

Green ASUS

This motherboard and its packaging comply with the European Union’s

Restriction on the use of Hazardous Substances (RoHS). This is in line

with the ASUS vision of creating environment-friendly and recyclable

products/packaging to safeguard consumers’ health while minimizing the

impact on the environment.

1-4 Chapter 1: Product introduction

1.4 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, ensure that the ATX power supply is

switched off or the power cord is detached from the power supply. Failure to do so may

cause severe damage to the motherboard, peripherals, or components.

Onboard 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 must 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.

ASUS P5G41T-M LX 1-5

1.5 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the

motherboard ts into it.

Ensure that you unplug the power cord before installing or removing the motherboard.

Failure to do so can cause you physical injury and damage motherboard components.

1.5.1 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.

1.5.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.

Do not overtighten the screws! Doing so can damage the motherboard.

Place this side towards

the rear of the chassis

1-6 Chapter 1: Product introduction

1.5.3 Motherboard layout

1.5.4 Layout contents

Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page

1. Keyboard power (3-pin KBPWR) 1-19 9. Serial ATA connectors (7-pin SATA1-4) 1-24

2. ATX power connectors (24-pin EATXPWR,

4-pin ATX12V)

1-23 10. USB connectors (10-1 pin USB56, USB78) 1-24

3. USB device wake-up (3-pin USBPW1-4, 3-pin

USBPW5-8)

1-19 11. System panel connector (10-1 pin F_PANEL) 1-26

4. CPU and chassis fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN)

1-25 12. Speaker connector (4-pin SPEAKER) 1-26

5. Intel LGA775 CPU socket 1-7 13. Front panel audio connector (10-1 pin AAFP) 1-21

6. DDR3 DIMM slots 1-12 14. Digital audio connector (4-1 pin SPDIF_OUT) 1-25

7. IDE connector (40-1 pin PRI_IDE) 1-22 15. Onboard LED (SB_PWR) 1-4

8. Clear RTC RAM (3-pin CLRTC) 1-18

ASUS P5G41T-M LX 1-7

1.6 Central Processing Unit (CPU)

The motherboard comes with a surface mount LGA775 socket designed for the Intel®

Core™2 Extreme / Core™2 Quad / Core™2 Duo / Pentium® dual-core / Celeron® dual-core /

Celeron® processors

• Unplug all power cables before installing the CPU.

• Connect the CPU fan cable to the CPU_FAN connector and chassis fan cable to the

CHA_FAN connector to ensure system stability.

• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the

socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing,

or if you see any damage to the PnP cap/socket contacts/motherboard components.

ASUS will shoulder the cost of repair only if the damage is shipment/transit-related.

• Keep the cap after installing the motherboard. ASUS will process Return Merchandise

Authorization (RMA) requests only if the motherboard comes with the cap on the

LGA775 socket.

• The product warranty does not cover damage to the socket contacts resulting from

incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP

cap.

1.6.1 Installing the CPU

To install a CPU:

1. Locate the CPU socket on the motherboard.

Before installing the CPU, ensure that the cam box is facing towards you and the load lever

is on your left.

The motherboard supports Intel® LGA775 processors with the Intel® Enhanced Intel

SpeedStep® Technology (EIST) and Hyper-Threading Technology.

1-8 Chapter 1: Product introduction

To prevent damage to the socket

pins, do not remove the PnP cap

unless you are installing a CPU.

2. Press the load lever with your thumb

(A), then move it to the left (B) until it is

released from the retention tab.

Load lever

Retention tab

4. Lift the load plate with your thumb and

forenger to a 100º angle (4A), then

push the PnP cap from the load plate

window to remove (4B).

3. Lift the load lever in the direction of the

arrow to a 135º angle. PnP cap

Load plate

5. Position the CPU over the socket,

ensuring that the gold triangle is on the

bottom-left corner of the socket then t

the socket alignment key into the CPU

notch.

Gold

triangle

mark

Alignment key

CPU notch

ASUS P5G41T-M LX 1-9

6. Apply some Thermal Interface Material

to the exposed area of the CPU that the

heatsink will be in contact with, ensuring

that it is spread in an even thin layer.

DO NOT eat the Thermal Interface Material. If it gets into your eyes or touches your skin,

ensure that you wash it off immediately, and seek professional medical help.

Some heatsinks come with

pre-applied thermal paste. If so, skip

this step.

To prevent contaminating the paste, DO NOT spread the paste with your nger directly.

7. Close the load plate (A), then push

the load lever (B) until it snaps into the

retention tab.

1-10 Chapter 1: Product introduction

1.6.2 Installing the CPU heatsink and fan

The Intel® LGA775 processor requires a specially designed heatsink and fan assembly to

ensure optimum thermal condition and performance.

•

When you buy a boxed Intel® processor, the package includes the CPU fan and

heatsink assembly. If you buy a CPU separately, ensure that you use only Intel®-certied

multi-directional heatsink and fan.

• Your Intel® LGA775 heatsink and fan assembly comes in a push-pin design and requires

no tool to install.

• If you purchased a separate CPU heatsink and fan assembly, ensure that you have

properly applied Thermal Interface Material to the CPU heatsink or CPU before you

install the heatsink and fan assembly.

Ensure that you have installed the motherboard to the chassis before you install the CPU

fan and heatsink assembly.

The type of CPU heatsink and fan assembly may differ, but the installation steps and

functions should remain the same. The illustration above is for reference only.

To install the CPU heatsink and fan:

1. Place the heatsink on top of the installed

CPU, ensuring that the four fasteners match

the holes on the motherboard.

2. Push down two fasteners at a time in a

diagonal sequence to secure the heatsink

and fan assembly in place.

Orient the heatsink and fan assembly

such that the CPU fan cable is closest to

the CPU fan connector.

ASUS P5G41T-M LX 1-11

3. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.

Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if

you fail to plug this connector.

1.6.3 Uninstalling the CPU heatsink and fan

To uninstall the CPU heatsink and fan:

1. Disconnect the CPU fan cable from the connector on the motherboard.

2. Rotate each fastener counterclockwise.

3. Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and

fan assembly from the motherboard.

1-12 Chapter 1: Product introduction

1.7 System memory

1.7.1 Overview

The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules

(DIMM) sockets. The gure illustrates the location of the DDR3 DIMM sockets:

Channel Sockets

Channel A DIMM_A1

Channel B DIMM_B1

4. Carefully remove the heatsink and fan

assembly from the motherboard.

5. Rotate each fastener clockwise to ensure

correct orientation when reinstalling.

ASUS P5G41T-M LX 1-13

1.7.2 Memory congurations

You may install 512MB, 1GB, 2GB, and 4GB 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.

• Always install DIMMs with the same CAS latency. For optimum compatibility, it is

recommended that you obtain memory modules from the same vendor.

• 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:

- Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS.

- Install a 64-bit Windows® OS when you want to install 4GB or more memory on

the motherboard.

• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.

• 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.

• For system stability, use a more efcient cooling system to support a full memory load (2

DIMMs) or overclocking conditions.

P5G41T-M LX Motherboard Qualied Vendors Lists (QVL)

DDR3-1066 MHz capability

Vendor Part No. Size SS/

Chip

Brand Chip NO. Timing Voltage

DIMM socket

support (Optional)

A* B*

Crucial CT12864BA1067.8FF 1024MB SS Micron 9GF22D9KPT 7 - • •

Crucial CT25664BA1067.16FF 2048MB DS Micron 9HF22D9KPT 7 - • •

ELPIDA EBJ10UE8EDF0-AE-F 1024MB SS ELPIDA J1108EDSE-DJ-F - 1.35V(low

voltage) • •

Elpida EBJ51UD8BAFA-AC-E 512MB SS Elpida J5308BASE-AC-E - - • •

Elpida EBJ51UD8BAFA-AE-E 512MB SS Elpida J5308BASE-AC-E - - • •

Elpida EBJ11UD8BAFA-AE-E 1024MB DS Elpida J5308BASE-AC-E - - • •

ELPIDA EBJ21UE8EDF0-AE-F 2048MB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low

voltage) • •

Kingston KVR1066D3N7/1G 1024MB SS Kingston D1288JEKAPGA7U 7 1.5V • •

Kingston KVR1066D3N7/2G 2048MB DS Kingston D1288JEKAPGA7U 7 1.5V • •

Micron MT8JTF12864AZ-1G1F1 1024MB SS Micron 9GF22D9KPT 7 - • •

Micron MT16JTF25664AZ-1G1F1 2048MB DS Micron 9HF22D9KPT 7 - • •

SAMSUNG M378B2873EH1-CF8 1024MB SS Samsung SEC 901 HCF8 K4B1G0846E - - • •

SAMSUNG M378B5273BH1-CF8 4096MB DS SAMSUNG 846 K4B2G0846B-HCF8 - - • •

Elixir M2Y2G64CBHA9N-BE 2048MB DS - - 7-7-7-20 - • •

Kingtiger 2GB DIMM PC3-8500 2048MB DS Hynix H5TQ1G83AFP G7C - - • •

1-14 Chapter 1: Product introduction

DDR3-1333 MHz (O.C.) capability

(continued on the next page)

Vendor Part No. Size SS/

Chip

Brand Chip NO. Timing Voltage

DIMM socket

support (Optional)

A* B*

A-Data AD31333001GOU 1024MB SS A-Data AD30908C8D-151C E0906 - - •

A-Data AD31333G001GOU 3072MB(Kit of 3) SS - - 8-8-8-24 1.65-1.85V •

A-Data AD31333002GOU 2048MB DS A-Data AD30908C8D-151C E0903 - - •

A-Data AD31333G002GMU 2048MB DS - - 8-8-8-24 1.65-1.85V •

Corsair CM3X1024-1333C9DHX 1024MB SS - - 9-9-9-24 1.60V •

Corsair CM3X1024-1333C9 1024MB SS - - - - •

Corsair TR3X3G1333C9 G 3072MB(Kit of 3) SS - - 9-9-9-24 1.50V •

Corsair TR3X3G1333C9 3072MB(Kit of 3) SS - - 9 1.5V •

Corsair CM3X1024-1333C9DHX 1024MB DS Corsair - - - •

Corsair CM3X2048-1333C9DHX 2048MB DS - - - - •

Corsair TW3X4G1333C9 G 4096MB(Kit of 2) DS - - 9-9-9-24 1.50V •

Crucial CT12864BA1339.8FF 1024MB SS Micron 9FF22D9KPT 9 - •

Crucial BL12864TA1336.8SFB1 2048MB(Kit of 2) SS - - 6-6-6-20 1.8V •

Crucial CT25664BA1339.16FF 2048MB DS Micron 9KF27D9KPT 9 - •

Crucial BL25664ABA1336.16SFB1 4096MB(Kit of 2) DS - - 6-6-6-20 1.8V •

Crucial BL25664BA1336.16SFB1 4096MB(Kit of 2) DS - - 6-6-6-20 1.8V •

Crucial BL25664BN1337.16FF

(XMP) 6144MB(Kit of 3) DS - - 7-7-7-24 1.65V •

ELPIDA EBJ10UE8EDF0-DJ-F 1024MB SS ELPIDA J1108EDSE-DJ-F - 1.35V(low

voltage) •

ELPIDA EBJ21UE8EDF0-DJ-F 2048MB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low

voltage) •

G.SKILL F3-10600CL8D-2GBHK 1024MB SS G.SKILL - - - •

G.SKILL F3-10600CL9D-2GBPK 1024MB SS G.SKILL - - - •

G.SKILL F3-10666CL7T-3GBPK 3072MB(Kit of 3) SS - - 7-7-7-18 1.5~1.6V •

G.SKILL F3-10666CL9T-3GBNQ 3072MB(Kit of 3) SS - - 9-9-9-24 1.5~1.6V •

G.SKILL F3-10600CL7D-2GBPI 1024MB DS G.SKILL - - - •

G.SKILL F3-10600CL9D-2GBNQ 1024MB DS G.SKILL - - - •

G.SkiLL F3-10666CL8D-4GBHK 4096MB(Kit of 2) DS - - 8-8-8-21 1.5-1.6V •

G.SKILL F3-10666CL7T-6GBPK 6144MB(Kit of 3) DS - - 7-7-7-18 1.5~1.6V •

G.SKILL F3-10666CL9T-6GBNQ 6144MB(Kit of 3) DS - - 9-9-9-24 1.5V~1.6V •

GEIL DDR3-1333 CL9-9-9-24 1024MB SS - - 9 - •

GEIL GV34GB1333C7DC 2048MB DS - - 7-7-7-24 1.5V •

GEIL GG34GB1333C9DC 4096MB(Kit of 2) DS GEIL GL1L128M88BA12N 9-9-9-24 1.3V(low

voltage) •

GEIL DDR3-1333 CL9-9-9-24 6144MB(Kit of 3) DS - - 9 1.5V •

Kingmax FLFD45F-B8MF9 1024MB SS Micron 8HD22D9JNM - - •

Kingmax FLFD45F-B8MH9 MAES 1024MB SS Micron 9CF22D9KPT - - •

Kingmax FLFE85F-B8MF9 2048MB DS Micron 8HD22D9JNM - - •

Kingmax FLFE85F-B8MH9 MEES 2048MB DS Micron 9GF27D9KPT - - •

Kingston KVR1333D3N9/2G 2048MB DS Qimonda IDSH1G-03A1F1C-13H - 1.5V •

Micron MT8JTF12864AZ-1G4F1 1024MB SS Micron 9FF22D9KPT 9 - •

Micron MT18JTF25664AZ-1G4F1 2048MB DS Micron 9KF27D9KPT 9 - •

OCZ OCZ3P13332GK 2048MB(Kit of 2) SS - - 7-7-7-20 1.8V •

OCZ OCZ3X1333LV3GK(XMP) 3072MB(Kit of 3) SS - - - 1.6V •

OCZ OCZ3G13334GK 4096MB(Kit of 2) DS - - - 1.7V •

OCZ OCZ3P13334GK 4096MB(Kit of 2) DS - - 7-7-7-20 1.8V •

OCZ OCZ3P1333LV4GK 4096MB(Kit of 2) DS - - 7-7-7-20 1.65V •

OCZ OCZ3RPX1333EB4GK 4096MB(Kit of 2) DS - - 6-5-5-20 1.85V •

OCZ OCZ3X13334GK(XMP) 4096MB(Kit of 2) DS - - 7-7-7-20 1.75V •

OCZ OCZ3G1333LV6GK 6144MB(Kit of 3) DS - - 9-9-9-20 1.65V •

OCZ OCZ3P1333LV6GK 6144MB(Kit of 3) DS - - 7-7-7-20 1.65V •

OCZ OCZ3X1333LV6GK(XMP) 6144MB(Kit of 3) DS - - 8-8-8-20 1.60V •

PSC AL7F8G73D-DG1 1024MB SS PSC A3P1GF3DGF928M9B05 - - •

ASUS P5G41T-M LX 1-15

DDR3-1333 MHz (O.C.) capability

SS - Single-sided / DS - Double - sided

DIMM support:

• A*: Supports one module inserted into any slot as Single-channel memory conguration.

• B*: Supports one pair of 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.

Vendor Part No. Size SS/

Chip

Brand Chip NO. Timing Voltage

DIMM socket

support (Optional)

A* B*

PSC AL8F8G73D-DG1 2048MB DS PSC A3P1GF3DGF928M9B05 - - •

SAMSUNG M378B2873DZ1-CH9 1024MB SS Samsung K4B1G0846D-HCH9 - - •

SAMSUNG M378B2873DZ1-CH9 1024MB SS SAMSUNG SEC 846 HCH9

K4B1G08460 - - •

SAMSUNG M378B2873EH1-CH9 1024MB SS Samsung SEC 913 HCH9

K4B1G0846E - - •

SAMSUNG M378B5673DZ1-CH9 2048MB DS Samsung K4B1G0846D-HCH9 - - •

SAMSUNG M378B5673EH1-CH9 2048MB DS Samsung SEC 913 HCH9

K4B1G0846E - - •

Super Talent W1333X2GB8 1024MB SS - - - - •

Transcend TS128MLK64V3U 1024MB SS - SEC 813HCH9

K4B1G0846D - - •

Transcend TS256MLK64V3U 2048MB DS Micron 9GF27D9KPT - - •

Transcend TS256MLK64V3U 2048MB DS - SEC816HCH9K4B1G0846D - - •

ASINT SLY3128M8-EDJ 1024MB SS ASINT DDRII1208-DJ 0844 - - •

ASINT SLY3128M8-EDJE 1024MB SS ELPIDA J1108BASE-DJ-E - - •

ASINT SLY3128M8-EDJ 2048MB DS ASINT DDRII1208-DJ 0844 - - •

ASINT SLZ3128M8-EDJE 2048MB DS ELPIDA J1108BASE-DJ-E - - •

BUFFALO FSX1333D3G-K2G 1024MB SS - - 7-7-7-20 - •

BUFFALO FSX1333D3G-2G 2048MB DS - - 7-7-7-20 - •

Century PC3-10600 DDR3-1333

9-9-9 1024MB SS Micron 8FD22D9JNM - - •

Century PC3-10600 DDR3-1333

9-9-9 2048MB DS Micron 8DD22D9JNM - - •

Elixir M2Y2G64CB8HA9N-CG 2048MB DS - - 7-7-7-20 - •

Kingtiger 2GB DIMM PC3-10666 2048MB DS Samsung SEC 904 HCH9

K4B1G0846D - - •

Kingtiger KTG2G1333PG3 2048MB DS - - - - •

PATRIOT PSD31G13332H 1024MB DS - - 9 - •

PATRIOT PSD31G13332 1024MB DS Patriot PM64M8D38U-15 - - •

PATRIOT PSD32G13332H 2048MB DS - - - - •

PATRIOT PDC34G1333ELK 4096MB(Kit of 2) DS - - 9-9-9-24 1.5V •

SILICON

POWER SP001GBLTU133S01 1024MB SS NANYA NT5CB128M8AN-CG 9 - •

SILICON

POWER SP001GBLTU133S02 1024MB SS elixir N2CB1680AN-C6 9 - •

SILICON

POWER SP002GBLTU133S02 2048MB DS elixir N2CB1680AN-C6 9 - •

TAKEMS TMS1GB364D081-107EY 1024MB SS - - 7-7-7-20 1.5V •

TAKEMS TMS1GB364D081-138EY 1024MB SS - - 8-8-8-24 1.5V •

TAKEMS TMS2GB364D081-107EY 2048MB DS - - 7-7-7-20 1.5V •

TAKEMS TMS2GB364D081-138EY 2048MB DS - - 8-8-8-24 1.5V •

TAKEMS TMS2GB364D082-138EW 2048MB DS - - 8-8-8-24 1.5V •

1-16 Chapter 1: Product introduction

1.7.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components.

Failure to do so can cause severe damage to both the motherboard and the components.

To install a DIMM:

1. Press the retaining clips outward to

unlock a DIMM socket.

2. Align a DIMM on the socket such that

the notch on the DIMM matches the

break on the socket.

Unlocked retaining clip

DIMM notch

A DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a DIMM into

a socket to avoid damaging the DIMM.

3. Firmly insert the DIMM into the socket

until the retaining clips snap back in place

and the DIMM is properly seated.

Locked Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining clips

outward to unlock the DIMM.

2. Remove the DIMM from the socket.

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out with

extra force.

DIMM notch

ASUS P5G41T-M LX 1-17

1.8 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.

1.8.1 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.

1.8.2 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.

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.

1.8.3 PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications.

1.8.4 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.

1.8.5 PCI Express x16 slot

This motherboard supports a PCI Express x16 graphics card that complies with the PCI

Express specications.

1-18 Chapter 1: Product introduction

1.9 Jumpers

1. Clear RTC RAM (3-pin 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.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default

position. Removing the cap will cause system boot failure!

• 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, then the BIOS automatically resets parameter settings to

default values.

To erase the RTC RAM:

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 re-enter

data.

ASUS P5G41T-M LX 1-19

2. Keyboard power (3-pin KBPWR)

This jumper allows you to enable or disable the keyboard wake-up feature. When you

set this jumper to pins 2–3 (+5VSB), you can wake up the computer by pressing a key

on the keyboard (the default is the Space Bar). This feature requires an ATX power

supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in

the BIOS.

3. USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8)

Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped,

DRAM refreshed, system running in low power mode) using the connected USB

devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU,

DRAM in slow refresh, power supply in reduced power mode).

• The USB device wake-up feature requires a power supply that can provide 500mA on

the +5VSB lead for each USB port; otherwise, the system would not power up.

• The total current consumed must NOT exceed the power supply capability (+5VSB)

whether under normal condition or in sleep mode.

1-20 Chapter 1: Product introduction

1.10 Connectors

1.10.1 Rear panel connectors

1. PS/2 mouse port (green). This port is for a PS/2 mouse.

2. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.

3. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)

through a network hub. Refer to the table below for the LAN port LED indications.

LAN port LED indications

ACT/LINK LED SPEED LED

Status Description Status Description

OFF No link OFF 10 Mbps connection

ORANGE Linked ORANGE 100 Mbps connection

BLINKING Data activity GREEN 1 Gbps connection

4. Line In port (light blue). This port connects to the tape, CD, DVD player, or other

audio sources.

5. 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.

6. Microphone port (pink). This port connects to a microphone.

LAN port

SPEED

LED

ACT/LINK

LED

Refer to the audio conguration table below for the function of the audio ports in a 2, 4, 6,

or 8-channel conguration.

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 the chassis with HD audio module in the front panel to support 8-channel audio output.

ASUS P5G41T-M LX 1-21

7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

9. VGA port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.

10. COM port. This port is for pointing devices or other serial devices.

11. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.

1.10.2 Internal connectors

1. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports

either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel

audio I/O module cable to this connector.

• We recommend that you connect a high-denition front panel audio module to this

connector to avail of the motherboard’s 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 setup to [HD Audio]. If you want to connect an

AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this

connector is set to [HD Audio]. See section 2.4.3 Chipset for details.

1-22 Chapter 1: Product introduction

2. IDE connector (40-1 pin PRI_IDE)

The onboard IDE connector is for the Ultra DMA 100/66/33 signal cable. There are

three connectors on each Ultra DMA 100/66/33 signal cable: blue, black, and gray.

Connect the blue connector to the motherboard’s IDE connector, then select one of the

following modes to congure your device.

Drive jumper setting Mode of device(s) Cable connector

Single device Cable-Select or Master - Black

Two devices

Cable-Select Master Black

Slave Gray

Master Master Black or gray

Slave Slave

• Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA

cable connector. This prevents incorrect insertion when you connect the IDE cable.

• Use the 80-conductor IDE cable for Ultra DMA 100/66/33 IDE devices.

If any device jumper is set as “Cable-Select,” ensure that all other device jumpers have the

same setting.

ASUS P5G41T-M LX 1-23

3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for ATX power supply plugs. The power supply plugs 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 400W 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 400W. 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.

1-24 Chapter 1: Product introduction

4. Serial ATA connectors (7-pin SATA1-4)

These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk

and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA

1.5Gb/s specication. The data transfer rate of the Serial ATA 3Gb/s is faster than the

standard parallel ATA with 133 MB/s (Ultra DMA133).

Install the Windows® XP Service Pack 2 or later version before using Serial ATA.

5. USB connectors (10-1 pin USB56, USB78)

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

480 Mbps connection speed.

Never connect a 1394 cable to the USB connectors. Doing so will damage the

motherboard!

The USB module cable is purchased separately.

ASUS P5G41T-M LX 1-25

6. CPU and chassis fan connectors (4-pin CPU_FAN, 3-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.

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!

Only the 4-pin CPU fan supports the ASUS Q-FAN feature.

7. Digital audio connector (4-1 pin SPDIF_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect

the S/PDIF Out module cable to this connector, then install the module to a slot

opening at the back of the system chassis.

The S/PDIF module is purchased separately.

1-26 Chapter 1: Product introduction

8. 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 +HDLED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The HD 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 connector is for the system power button. Pressing the power button turns

the system on or puts the system in sleep or soft-off mode depending on the BIOS

settings. Pressing the power switch for more than four seconds while the system is ON

turns the system OFF.

• 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.

9. Speaker connector (4-pin SPEAKER)

This 4-pin connector is for the chassis-mounted system warning speaker. The speaker

allows you to hear system beeps and warnings.

ASUS P5G41T-M LX 1-27

1.11 Software support

1.11.1 Installing an operating system

This motherboard supports Windows® XP/Vista/7 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 version / Windows® Vista

Service Pack 1 or later version before installing the drivers for better compatibility and

system stability.

1.11.2 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.

If Autorun is NOT enabled in 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.

The following screen is for reference only.

Click an item to install

Click an icon to

display Support DVD/

motherboard information

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 to the optical drive. The DVD automatically displays the Drivers menu

if Autorun is enabled in your computer.

1-28 Chapter 1: Product introduction

ASUS P5G41T-M LX 2-1

Chapter 2

BIOS information

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.

• 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.

Updating the BIOS

To update the BIOS:

1. From the Windows® desktop, click Start > Programs > ASUS > ASUSUpdate >

ASUSUpdate to launch the ASUS Update utility.

2. From the dropdown list, select any of the updating process:

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, or click Auto

Select then click Next.

c. From the FTP site, select the BIOS version that you wish to download then click

Next.

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.

Installing ASUS Update

To install ASUS Update:

1. Place the support DVD in the optical drive. The Drivers menu appears.

2. Click the Utilities tab, then click ASUS Update.

3. Follow the onscreen instructions to complete the installation.

Quit all Windows® applications before you update the BIOS using this utility.

2.1 Managing and updating your BIOS

2-2 Chapter 2: BIOS information

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, then launch

EZ Flash 2 in any of these two ways:

• Press <Alt> + <F2> during POST.

• Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and

press <Enter> to enable it.

Press <Tab> to switch between drives until the correct BIOS le is found.

2. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process

and automatically reboots the system when done.

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 a 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.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.36

Current ROM Update ROM

Note

FLASH TYPE: WINBOND W25X80

PATH: A:\

BOARD: P5G41T-M LX

VER: 0201 (H:00 B:02)

DATE: 11/04/2009

BOARD: Unknown

VER: Unknown

DATE: Unknown

[Enter] Select or Load [Tab] Switch [V] Drive Info

[Up/Down/Home/End] Move [B] Backup [ESC] Exit

• This function supports USB ash disks with FAT 32/16 format and single partition only.

• DO NOT shut down or reset the system while updating the BIOS to prevent system boot

failure!

ASUS P5G41T-M LX 2-3

2.1.3 ASUS CrashFree BIOS

The ASUS CrashFree BIOS 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 removable device that contains the updated

BIOS le.

• Before using this utility, rename the BIOS le in the removable device into

P5G41TM.ROM.

• 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.

• The removable devices that ASUS CrashFree BIOS support vary with motherboard

models. For motherboards without the oppy connector, prepare a USB ash disk before

using this utility.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD to the optical drive or the removable device that contains the

BIOS le to the USB port or to the oppy disk drive, if supported.

3. The utility automatically checks the devices for the BIOS le. When found, the utility

reads the BIOS le and starts ashing the corrupted BIOS le.

4. Turn off the system after the utility completes the updating process and turn on again.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause

system boot failure!

Ensure to load the BIOS default settings to ensure system compatibility and stability. Select

the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for

details.

2-4 Chapter 2: BIOS information

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.

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.

• 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 Setups Default item under the Exit Menu. See section 2.8 Exit Menu.

• The BIOS setup screens shown in this section are for reference purposes only, and may

not exactly match what you see on your screen.

• Visit the ASUS website at www.asus.com to download the latest BIOS le for this

motherboard.

ASUS P5G41T-M LX 2-5

2.2.2 Menu bar

The menu bar on top of the screen has the following main items:

Main For changing the basic system conguration.

Advanced For changing the advanced system settings.

Power For changing the advanced power management (APM)

conguration.

Boot For changing the system boot conguration.

Tools For conguring options for special functions.

Exit For selecting the exit options and loading default settings.

To select an item on the menu bar, press the right or left arrow key on the keyboard until the

desired item is highlighted.

2.2.1 BIOS menu screen

System Time [00:31:48]

System Date [Tue 01/01/2002]

Primary IDE Master :[Not Detected]

Primary IDE Slave :[Not Detected]

SATA 1 :[Not Detected]

SATA 2 :[Not Detected]

SATA 3 :[Not Detected]

SATA 4 :[Not Detected]

Storage Conguration

System Information

Use [ENTER], [TAB] or

[SHIFT-TAB] to select

a eld.

Use [+] or [-] to

congure system Time.

Navigation keys

General help

Menu bar

Submenu items

Conguration eldsMenu items

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Select Screen

Select Item

+- Change Field

Tab Select Field

F1 General Help

F10 Save and Exit

ESC Exit

2-6 Chapter 2: BIOS information

Select Screen

Select Item

+- Change Field

Tab Select Field

F1 General Help

F10 Save and Exit

ESC Exit

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Suspend Mode [Auto]

ACPI 2.0 Support [Disabled]

ACPI APIC support [Enabled]

APM Conguration

Hardware Monitor

Use [ENTER], [TAB] or

[SHIFT-TAB] to select

a eld.

Use [+] or [-] to

congure system

Time.

Options

Disabled

Enabled

Pop-up window

Scroll bar

2.2.3 Navigation keys

At the bottom right corner of a menu screen are the navigation keys for that particular menu.

Use the navigation keys to select items in the menu and change the settings.

Some of the navigation keys differ from one screen to another.

2.2.4 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 (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their

respective menu items.

2.2.5 Submenu items

A solid triangle before each item on any menu screen means that the item has a submenu. To

display the submenu, select the item and press <Enter>.

2.2.6 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 enclosed in brackets, and is highlighted when selected. To

change the value of a eld, select it then press <Enter> to display a list of options. Refer to

2.2.7 Pop-up window.

2.2.7 Pop-up window

Select a menu item then press

<Enter> to display a pop-up

window with the conguration

options for that item.

2.2.8 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.

2.2.9 General help

At the top right corner of the menu screen is a brief description of the selected item.

ASUS P5G41T-M LX 2-7

2.3 Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an

overview of the basic system information.

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 Primary IDE Master/Slave, SATA1~4

While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices.

There is a separate sub-menu for each IDE/SATA device. Select a device item then press

<Enter> to display the IDE/SATA device information.

The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,

LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These

values are not user-congurable. These items show Not Detected if no IDE/SATA device is

installed in the system.

Type [Auto]

Selects the type of IDE drive. Setting to Auto allows automatic selection of the appropriate

IDE device type. Select CDROM if you are specically conguring a CD-ROM drive. Select

ARMD (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive.

Conguration options: [Not Installed] [Auto] [CDROM] [ARMD]

Select Screen

Select Item

+- Change Field

Tab Select Field

F1 General Help

F10 Save and Exit

ESC Exit

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

System Time [12:56:38]

System Date [Tue 01/01/2002]

Primary IDE Master :[Not Detected]

Primary IDE Slave :[Not Detected]

SATA 1 :[Not Detected]

SATA 2 :[Not Detected]

SATA 3 :[Not Detected]

SATA 4 :[Not Detected]

Storage Conguration

System Information

Use [ENTER], [TAB] or

[SHIFT-TAB] to select

a eld.

Use [+] or [-] to

congure system time.

Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and

how to navigate through them.

This item does not appear when you select the SATA 1/2/3/4 devices.

2-8 Chapter 2: BIOS information

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting to [Auto] enables the LBA mode if the device

supports this mode, and if the device was not previously formatted with LBA mode disabled.

Conguration options: [Disabled] [Auto]

Block (Multi-sector Transfer) M [Auto]

Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from

and to the device occurs multiple sectors at a time if the device supports multi-sector transfer

feature. When set to [Disabled], the data transfer from and to the device occurs one sector

at a time. Conguration options: [Disabled] [Auto]

PIO Mode [Auto]

Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]

DMA Mode [Auto]

Selects the DMA mode. Conguration options: [Auto]

SMART Monitoring [Auto]

Sets the Smart Monitoring, Analysis, and Reporting Technology.

Conguration options: [Auto] [Disabled] [Enabled]

32Bit Data Transfer [Enabled]

Enables or disables 32-bit data transfer. Conguration options: [Disabled] [Enabled]

2.3.4 Storage Conguration

The items in this menu allow you to set or change the congurations for the SATA devices

installed in the system. Select an item then press <Enter> if you want to congure the item.

ATA/IDE Conguration [Enhanced]

Allows you to set the ATA/IDE conguration.

Conguration options: [Disabled] [Compatible] [Enhanced]

Enhanced Mode Support On [S-ATA]

Sets Serial ATA, Parallel ATA or both as native mode.

Conguration options: [S-ATA+P-ATA] [S-ATA] [P-ATA].

IDE Detect Time Out (Sec) [35]

Selects the time out value for detecting ATA/ATAPI devices.

Conguration options: [0] [5] [10] [15] [20] [25] [30] [35]

ASUS P5G41T-M LX 2-9

2.4 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system

devices.

Take caution when changing the settings of the Advanced menu items. Incorrect eld

values can cause the system to malfunction.

JumperFree Conguration

CPU Conguration

Chipset

Onboard Devices Conguration

USB Conguration

PCIPnP

Adjust System

frequency/voltage.

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

2.4.1 JumperFree Conguration

The items in this menu allows you to adjust the system frequency/voltage.

Ai Overclocking [Auto]

Allows selection of CPU overclocking options to achieve desired CPU internal frequency.

Select either one of the preset overclocking conguration options:

Manual - allows you to individually set overclocking parameters.

Auto - loads the optimal settings for the system.

Overclock Prole - loads overclocking proles with optimal parameters for stability

when overclocking.

2.3.5 System Information

This menu gives you an overview of the general system specications. The BIOS

automatically detects the items in this menu.

BIOS Information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specication.

System Memory

Displays the auto-detected system memory.

2-10 Chapter 2: BIOS information

FSB / CPU External Frequency Synchronization

Front Side Bus CPU External Frequency

FSB 1333 333 MHz

FSB 1066 266 MHz

FSB 800 200 MHz

PCI Express Frequency [Auto]

Allows you to select the PCI Express frequency. Conguration options: [Auto] [90] [91]

[92]~[150]

Overclock Options [Overclock 5%]

Allows you to select the overclock options. Conguration options: [Overclock 5%]

[Overclock 10%] [Overclock 15%] [Overclock 20%] [Test Mode]

DRAM Frequency [Auto]

Allows you to set the DRAM frequency. Conguration options: [Auto] [800 MHz] [1067MHz]

The following item appears only when you set the AI Overclocking item to [Overclock

Prole].

Selecting a very high DRAM frequency may cause the system to become unstable! If this

happens, revert to the default setting.

FSB DRAM Frequency

Auto 667MHz 800MHz 960MHz 1000MHz 1067MHz 1100MHz

1333 v v v v v

1066 v v v v

800 v v v

The following table shows the DRAM Frequency options that appear when the FSB value is

1333, 1066, and 800.

CPU Frequency [xxx]

Displays the frequency sent by the clock generator to the system bus and PCI bus. The

value of this item is auto-detected by the BIOS. Use the <+> and <-> keys to adjust

the CPU frequency. You can also type the desired CPU frequency using the numeric

keypad. The values range from 200 to 800. Refer to the table below for the correct

Front Side Bus and CPU External Frequency settings.

The following two items appear only when you set the AI Overclocking item to [MANUAL].

ASUS P5G41T-M LX 2-11

2.4.2 CPU Conguration

The items in this menu show the CPU-related information that the BIOS automatically

detects.

Ratio CMOS Setting [Auto]

Sets the ration between CPU core clock and the FSB frequency. Conguration option: [Auto]

C1E Support [Enabled]

Allows you to enable or disable C1E Support. Conguration options: [Disabled] [Enabled]

Max CPUID Value Limit [Disabled]

Setting this item to [Enabled] allows legacy operating systems to boot even without support

for CPUs with extended CPUID functions. Conguration options: [Disabled] [Enabled]

Intel(R) Virtualization Tech [Enabled]

Enables or disables Intel® Virtualization Technology. Virtualization enhanced by Intel®

Virtualization Technology allows a platform to run multiple operating systems and applications

in independent partitions. With virtualization, one computer system can function as multiple

virtual systems. Conguration options: [Enabled] [Disabled]

• If an invalid ratio is set in CMOS then actual and set values may differ.

• Key in ratio numbers directly.

Memory Voltage [Auto]

Allows you to set the memory voltage. The values range from 1.20000V to 2.4600V with a

0.02000V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

NB Voltage [Auto]

Allows you to set the Northbridge voltage. The values range from 1.12500V to 1.51875V with

a 0.00625V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

VTT Voltage [Auto]

Allows you to set the VTT voltage. The values range from 1.20000V to 1.59375V with a

0.00625V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

CPU Vcore [Auto]

Allows you to set the CPU Vcore voltage. Conguration options: [Auto] [+50mv] [+100mv]

[+150mv]

Auto PSI [Enabled]

Allows you to enable or disable the Auto PSI mode.

Conguration options: [Disabled] [Enabled]

2-12 Chapter 2: BIOS information

2.4.3 Chipset

The Chipset menu allows you to change the advanced chipset settings. Select an item then

press <Enter> to display the sub-menu.

North Bridge Conguration

Memory Remap Feature [Enabled]

Allows you to enable or disable the remapping of overlapped PCI memory above the total

physical memory. Conguration options: [Disabled] [Enabled]

Congure DRAM Timing by SPD [Enabled]

Allows you to enable or disable congurating DRAM Timing by SPD.

Conguration options: [Enabled] [Disabled]

Initiate Graphic Adapter [PEG/PCI]

Allows you to select the graphics controller as the primary boot device.

Conguration options: [IGD] [PCI/IGD] [PCI/PEG] [PEG/IGD] [PEG/PCI]

IGD Graphics Mode Select [Enabled, 32MB]

Allows you to select the amout of system memory used by the Interanal graphics device.

Conguration options: [Disabled] [Enabled, 32MB] [Enabled, 48MB] [Enabled, 64MB]

[Enabled, 128MB] [Enabled, 256MB]

GTT Graphics Memory Size [No VT mode, 2MB]

This item is not user- congurable.

The following item appears only when you installed an Intel® Pentium® 4 or later CPU that

supports the Enhanced Intel SpeedStep® Technology (EIST).

Intel(R) SpeedStep(TM) Tech [Enabled]

Allows you to use the Enhanced Intel® SpeedStep® Technology. When set to [Enabled], you

can adjust the system power settings in the operating system to use the EIST feature. Set this

item to [Disabled] if you do not want to use the EIST.

Conguration options: [Enabled] [Disabled]

CPU TM Function [Enabled]

Enables or disables Intel® CPU Thermal Monitor (TM) function, a CPU overheating protection

function. When enabled, the CPU core frequency and voltage are reduced when the CPU

overheats. Conguration options: [Disabled] [Enabled]

Execute-Disable Bit Capability [Enabled]

Allows you to enable or disable the No-Execution Page Protection Technology. Setting this

item to [Disabled] forces the XD feature ag to always return to zero (0).

Conguration options: [Disabled] [Enabled]

ASUS P5G41T-M LX 2-13

2.4.4 Onboard Devices Conguration

Onboard Gigabit LAN [Enabled]

Allows you to enable or disable the onboard Gigabit LAN controller.

Conguration options: [Enabled] [Disabled]

Onboard LAN Boot ROM [Disabled]

Allows you to enable or disable the boot ROM in the onboard LAN controller. This item

appears only when the Onboard LAN item is set to Enabled.

Conguration options: [Disabled] [Enabled]

Serial Port1 Address [3F8/IRQ4]

Allows you to select the Serial Port1 base address.

Conguration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]

Parallel Port Address [378]

Allows you to select the Parallel Port base addresses. Conguration options: [Disabled] [378]

[278] [3BC]

Parallel Port Mode [ECP]

Allows you to select the Parallel Port mode.

Conguration options: [Normal] [Bi-Directional] [EPP] [ECP]

ECP Mode DMA Channel [DMA3]

Appears only when the Parallel Port Mode is set to [ECP]. This item allows you to set

the Parallel Port ECP DMA. Conguration options: [DMA0] [DMA1] [DMA3]

EPP Version [1.9]

Appears only when the Parallel Port Mode is set to [EPP].

Conguration options: [1.9] [1.7]

Parallel Port IRQ [IRQ7]

Allows you to select parallel port IRQ. Conguration options: [IRQ5] [IRQ7]

DVMT Memory [256MB]

Allows you to select the DVMT memory.

Conguration options: [128MB] [256MB] [Maximum DVMT]

Protect Audio Video Path Mode [Lite]

Allows you to select the Protected Audio-Video Path (PAVP) mode.

Conguration options: [Disabled] [Lite] [Paranoid]

South Bridge Conguration

Audio Controller [Enabled]

Allows you to set the audio controller. Conguration options: [Enabled] [Disabled]

Front Panel Type [HD Audio]

Allows you to select the front panel support type. If High Denition Audio Front Panel

used, set this item to [HD Audio] mode. Conguration options: [AC97] [HD Audio]

2-14 Chapter 2: BIOS information

The Module Version and USB Devices Enabled items show the auto-detected values. If no

USB device is detected, the item shows None.

USB Functions [Enabled]

Allows you to disable or enable the USB functions.

Conguration options: [Disabled] [Enabled]

USB 2.0 Controller [Enabled]

Allows you to enable or disable USB 2.0 controller.

Conguration options: [Enabled] [Disabled]

Legacy USB Support [Auto]

Allows you to enable or disable support for Legacy USB storage devices, including USB ash

drives and USB hard drives. Setting to [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.

Conguration options: [Disabled] [Enabled] [Auto]

USB 2.0 Controller Mode [HiSpeed]

Allows you to congure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed

(12Mbps). Conguration options: [FullSpeed] [HiSpeed]

The following items may only appear when a USB storage device is plugged.

USB Mass Storage Device Conguration

USB Mass Storage Reset Delay [20 Sec]

Allows you to set the maximum time that the BIOS waits for the USB storage device to

initialize. Conguration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]

Emulation Type [Auto]

Allows you to select the emulation type. Conguration options: [Auto] [Floppy] [Forced

FDD] [Hard Disk] [CDROM]

2.4.5 USB Conguration

The items in this menu allows you to change the USB-related features. Select an item then

press <Enter> to display the conguration options.

ASUS P5G41T-M LX 2-15

2.5 Power menu

The Power menu items allow you to change the settings for the Advanced Power

Management (APM). Select an item then press <Enter> to display the conguration options.

Suspend Mode [Auto]

ACPI 2.0 Support [Enabled]

ACPI APIC Support [Enabled]

Anti Surge Support [Enabled]

APM Conguration

Hardware Monitor

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Select the ACPI state

used for System

Suspend.

2.5.1 Suspend Mode [Auto]

Allows you to select the Advanced Conguration and Power Interface (ACPI) state to be used

for system suspend. Conguration options: [S1 (POS) Only] [S3 Only] [Auto]

2.5.2 ACPI 2.0 Support [Enabled]

Allows you to add more tables for Advanced Conguration and Power Interface (ACPI) 2.0

specications. Conguration options: [Disabled] [Enabled]

2.5.3 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)

support in the Application-Specic Integrated Circuit (ASIC). When set to Enabled, the ACPI

APIC table pointer is included in the RSDT pointer list. Conguration options: [Disabled]

[Enabled]

2.5.4 Anti Surge Support [Enabled]

Allows you to enable or disable the Anti-Surge protection. Conguration options: [Disabled]

[Enabled]

Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values

can cause the system to malfunction.

Plug and Play O/S [No]

When set to [No], BIOS congures all the devices in the system. When set to [Yes] and if you

install a Plug and Play operating system, the operating system congures the Plug and Play

devices not required for boot. Conguration options: [No] [Yes]

2.4.6 PCI PnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.

The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA

devices, and setting the memory size block for legacy ISA devices.

2-16 Chapter 2: BIOS information

2.5.5 APM Conguration

Restore on AC Power Loss [Power Off]

When set to [Power Off], the system goes into off state after an AC power loss. When set

to [Power On], the system goes on after an AC power loss. When set to [Last State], the

system goes into either off or on state, whatever the system state was before the AC power

loss. Conguration options: [Power Off] [Power On] [Last State]

Power On By RTC Alarm [Disabled]

Allows you to enable or disable RTC to generate a wake event. When this item is set to

Enabled, the items RTC Alarm Date, RTC Alarm Hour, RTC Alarm Minute, and RTC Alarm

Second appear with set values. Conguration options: [Disabled] [Enabled]

Power On By External Modem [Disabled]

This allows either settings of [Enabled] or [Disabled] for powering up the computer

when the external modem receives a call while the computer is in Soft-off mode.

Conguration options: [Disabled] [Enabled]

Power On By PCI (E) Device [Disabled]

When set to [Enabled], this parameter allows you to wake the system through a PCI Express/

PCI card. This feature requires an ATX power supply that provides at least 1A on the +5VSB

lead. Conguration options: [Disabled] [Enabled]

Power On By PS/2 Keyboard [Disabled]

Allows you to use specic keys on the keyboard to turn on the system. This feature requires

an ATX power supply that provides at least 1A on the +5VSB lead. Conguration options:

[Disabled] [Space Bar] [Ctrl-Esc] [Power Key]

Power On By PS/2 Mouse [Disabled]

When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the

system. This feature requires an ATX power supply that provides at least 1A on the +5VSB

lead. Conguration options: [Disabled] [Enabled]

2.5.6 Hardware Monitor

CPU Temperature [xxxºC/xxxºF] or [Ignored]

MB Temperature [xxxºC/xxxºF] or [Ignored]

The onboard hardware monitor automatically detects and displays the motherboard and CPU

temperatures. Select Ignored if you do not wish to display the detected temperatures.

CPU/Chassis Fan Speed [xxxxRPM] or [Ignored]

The onboard hardware monitor automatically detects and displays the CPU/chassis fan

speed in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld

shows N/A. Select Ignored if you do not wish to display the detected speed.

CPU Q-Fan Control [Enabled]

Allows you to enable or disable the CPU Q-Fan function. Conguration options: [Disabled]

[Enabled]

ASUS P5G41T-M LX 2-17

2.6.1 Boot Device Priority

1st ~ xxth Boot Device

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. Conguration options: [Removable Dev.] [Hard Drive]

[ATAPI CD-ROM] [Disabled]

2.6 Boot menu

The Boot menu items allow you to change the system boot options. Select an item then

press <Enter> to display the sub-menu.

Boot Settings

Boot Device Priority

Boot Settings Conguration

Security

Species the Boot

Device Priority

sequence.

A virtual oppy disk

drive (Floppy Drive B:

) may appear when you

set the CD-ROM drive

as the rst boot

device.

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

2.6.2 Boot Settings Conguration

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to

decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the

POST items. Conguration options: [Disabled] [Enabled]

• To select the boot device during system startup, press <F8> when ASUS Logo appears.

• To access Windows® OS in Safe Mode, do any of the following:

• Press <F5> when ASUS Logo appears.

• Press <F8> after POST.

CPU Fan Prole [Optimal Mode]

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. Conguration options: [Optimal Mode]

[Silent Mode] [Performance Mode]

VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xxxV] or [Ignored]

The onboard hardware monitor automatically detects the voltage output through the onboard

voltage regulators.

2-18 Chapter 2: BIOS information

AddOn ROM Display Mode [Force BIOS]

Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock.

Conguration options: [Off] [On]

Wait For ‘F1’ If Error [Enabled]

When set to Enabled, the system waits for the F1 key to be pressed when error occurs.

Conguration options: [Disabled] [Enabled]

Hit ‘DEL’ Message Display [Enabled]

When set to [Enabled], the system displays the message Press DEL to run Setup during

POST. Conguration options: [Disabled] [Enabled]

2.6.3 Security

The Security menu items allow you to change the system security settings. Select an item

then press <Enter> to display the conguration options.

Change Supervisor Password

Select this item to set or change the supervisor password. The Supervisor Password item

on top of the screen shows the default Not Installed. After you set a password, this item

shows Installed.

To set a Supervisor Password:

1. Select the Change Supervisor Password item and press <Enter>.

2. In the password box, key in a password containing up to six letters or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you successfully set your password.

To change the supervisor password, follow the same steps in setting a supervisor password.

To clear the supervisor password, select the Change Supervisor Password then press

<Enter> twice. The message Password uninstalled appears.

If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock

(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.

Set this item to [Enabled] to use the ASUS MyLogo2™ feature.

Full Screen Logo [Enabled]

This allows you to enable or disable the full screen logo display feature. Conguration

options: [Disabled] [Enabled]

ASUS P5G41T-M LX 2-19

After you have set a supervisor password, the other items appear to allow you to change

other security settings.

User Access Level [Full Access]

This item allows you to select the access restriction to the Setup items.

Conguration options: [No Access] [View Only] [Limited] [Full Access]

[No Access] - prevents user access to the Setup utility.

[View Only] - allows access but does not allow change to any eld.

[Limited] - allows changes only to selected elds, such as Date and Time.

[Full Access] - allows viewing and changing all the elds in the Setup utility.

Change User Password

Select this item to set or change the user password. 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 Change User Password item and press <Enter>.

2. In the password box, key in a password containing up to six letters or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you set your password successfully.

To change the user password, follow the same steps in setting a user password.

Clear User Password

Select this item to clear the user password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When

set to [Always], BIOS checks for user password both when accessing Setup and booting the

system. Conguration options: [Setup] [Always]

2-20 Chapter 2: BIOS information

2.7.1 ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message

appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to

conrm your choice. See section 2.1.2 ASUS EZ Flash 2 for details.

2.7.2 Express Gate [Auto]

Allows you to enable or disable the ASUS Express Gate feature. The ASUS Express Gate

feature is a unique instant-on environment that provides quick access to the Internet browser

and Skype. Conguration options: [Enabled] [Disabled] [Auto]

Enter OS Timer [10 Seconds]

Sets countdown duration that the system waits at the Express Gate’s rst screen

before starting Windows or other installed OS. Choose [Prompt User] to stay at the

rst screen of Express Gate for user action. Conguration options: [Prompt User] [1

second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds] [30 seconds]

Reset User Data [No]

Allows you to clear Express Gate’s user data. Conguration options: [No] [Reset]

When setting this item to [Reset], ensure to save the setting to the BIOS so that the

user data will be cleared the next time you enter the Express Gate. User data includes

the Express Gate’s settings as well as any personal information stored by the web

browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case

where corrupt settings prevent the Express Gate environment from launching properly.

ASUS EZ Flash 2

Express Gate [Auto]

Enter OS Timer [10 Seconds]

Reset User Data [No]

AI NET 2

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Press ENTER to run

the utility to select

and update BIOS.

This utility supports

1.FAT 12/16/32 (r/w)

2.NTFS (read only)

3.CD-DISC (read only)

2.7 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item

then press <Enter> to display the sub-menu.

The rst time wizard will run again when you enter the Express Gate environment after

clearing its settings.

2.7.3 AI NET 2

Check Atheros LAN cable [Disabled]

Enables or disables checking of the Atheros LAN cable during the Power-On Self-Test

(POST). Conguration options: [Disabled] [Enabled]

ASUS P5G41T-M LX 2-21

2.8 Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS

items, and save or discard your changes to the BIOS items.

Pressing <Esc> does not immediately exit this menu. Select one of the options from this

menu or <F10> from the legend bar to exit.

Exit system setup

after saving the

changes.

F10 key can be used

for this operation.

Select Screen

Select Item

Enter Go to Sub-screen

F1 General Help

F10 Save and Exit

ESC Exit

Exit Options

Exit & Save Changes

Exit & Discard Changes

Discard Changes

Load Setup Defaults

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Select Screen

Select Item

+- Change Option

F1 General Help

F10 Save and Exit

ESC Exit

Exit system setup

after saving the

changes.

F10 key can be used

for this operation.

Exit & Save Changes

Once you are nished making your selections, choose this option from the Exit menu to

ensure the values you selected are saved to the CMOS RAM. An onboard backup battery

sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this

option, a conrmation window appears. Select OK to save changes and exit.

Exit & Discard Changes

Select this option only if you do not want to save the changes that you made to the Setup

program. If you made changes to elds other than System Date, System Time, and

Password, the BIOS asks for a conrmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved

values. After selecting this option, a conrmation appears. Select OK to discard any changes

and load the previously saved values.

Load Setup 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 OK to load default values. Select Exit & Save Changes or make other changes

before saving the values to the non-volatile RAM.

2-22 Chapter 2: BIOS information

Asus Computer Hardware P5G41T M LX PLUS Intel G41 Motherboard Manual

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