Accton Technology SMCWUSBN2 EZ ConnectTMN 802.11n Wireless USB 2.0 Adapter User Manual Manual
Accton Technology Corp EZ ConnectTMN 802.11n Wireless USB 2.0 Adapter Manual
Manual
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EZ Connect™ N
802.11n Wireless USB2.0 Adapter
SMCWUSB-N2
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20 Mason
Irvine, CA 92618
Phone: (949) 679-8000
EZ Connect
TM
N 802.11n
Wireless USB 2.0 Adapter
User Guide
The easy way to make all your network connections
July 2009
Rev: 1.0.0
1910020176
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Copyright
Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable.
However, no responsibility is assumed by SMC for its use, nor for any infringements of
patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of SMC. SMC reserves the right to
change specifications at any time without notice.
Copyright © 2009 by
SMC Networks, Inc.
20 Mason
Irvine, CA 92618
All rights reserved.
Trademarks:
SMC is a registered trademark; and EZ Connect N and EZ Switch are trademarks of SMC
Networks, Inc. Other product and company names are trademarks or registered trademarks
of their respective holders.
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Warranty and Product Registration
To register SMC products and to review the detailed warranty statement, please refer to
the Support Section of the SMC Website at http://www.smc.com
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FCC STATEMENT
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 the 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:
¾ Reorient or relocate the receiving antenna.
¾ Increase the separation between the equipment and receiver.
¾ Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
¾ Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. End users must follow the specific operating instructions for satisfying RF
exposure compliance. This transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter. This equipment has been SAR-evaluated for use in hand.
SAR measurements are based on a 4mm spacing from the body and that compliance is
achieved at that distance.
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This is a class B product. In a domestic environment, this product may cause radio interference,
in which case the user may be required to take adequate measures.
National Restrictions
2400.0-2483.5 MHz
Country Restriction Reason/remark
Bulgaria General authorization required for outdoor use and
public service
France
Outdoor use limited to 10
mW e.i.r.p. within the band
2454-2483.5 MHz
Military Radiolocation use. Refarming of the 2.4 GHz
band has been ongoing in recent years to allow current
relaxed regulation. Full implementation planned 2012
Italy If used outside of own premises, general authorization is
required
Luxembourg None General authorization required for network and service
supply(not for spectrum)
Norway Implemented This subsection does not apply for the geographical area
within a radius of 20 km from the centre of Ny-Ålesund
Russian Federation Only for indoor applications
Note: Please don’t use the product outdoors in France.
CONTENTS
Package Contents .................................................................................................... 1
Chapter 1. Introduction ........................................................................................ 2
1.1 Product Overview ............................................................................................................... 2
1.2 Features ............................................................................................................................. 2
1.3 LED Status ......................................................................................................................... 3
Chapter 2. Installation Guide ............................................................................... 4
2.1 Hardware Installation.......................................................................................................... 4
2.2 Software Installation ........................................................................................................... 4
2.2.1 Overview ..................................................................................................................... 4
2.2.2 Software Installation for Windows XP.......................................................................... 4
Chapter 3. Configuration for Windows XP........................................................ 10
3.1 Current Status .................................................................................................................. 10
3.2 Profile Management ......................................................................................................... 12
3.2.1 Add or Modify a Configuration Profile........................................................................ 12
3.2.2 Remove a profile ....................................................................................................... 18
3.2.3 Switch to another Profile ........................................................................................... 18
3.2.4 Export a Profile.......................................................................................................... 18
3.2.5 Import a Profile.......................................................................................................... 18
3.2.6 Scan Available Networks........................................................................................... 19
3.2.7 Auto Profile Selection Management .......................................................................... 20
3.3 Diagnostics....................................................................................................................... 21
3.3.1 Check Driver Information........................................................................................... 21
3.3.2 Check Receive and Transmit Statistical Information ................................................. 22
Chapter 4. Configuration for Windows Vista.................................................... 23
Chapter 5. WPS configuration ........................................................................... 26
5.1 PBC (Push Button Configuration) method ........................................................................ 26
5.2 PIN method ...................................................................................................................... 28
5.2.1 Enter a PIN into your AP device................................................................................ 28
5.2.2 Enter the PIN from your AP device............................................................................ 29
Appendix A: Specifications................................................................................... 31
Appendix B: Glossary............................................................................................ 32
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Package Contents
The Wireless USB Adapter package contains:
¾ 1 EZ Connect™ N 802.11n Wireless USB 2.0 Adapter (SMCWUSB-N2)
¾ 1 USB extension cable
¾ Warranty Information Card
¾ Quick Installation Guide
¾ 1 EZ Installation and Documentation CD, including:
• SMCWUSB-N2 Wireless Utility and Drivers
• User Manual
) Note:
Please register this product and upgrade the product warranty at http://www.smc.com
Please inform your distributor if there are any incorrect, damaged, or missing parts. If possible,
retain the carton and the original package materials, in case there is a need to return the
product.
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Chapter 1. Introduction
1.1 Product Overview
Thank you for purchasing the EZ Connect™ N 802.11n Wireless USB2.0 Adapter
(SMCWUSB-N2). Designed for both the home and office, this wireless USB2.0 adapter provides
the speed, coverage and security expected by today's wireless users. The SMCWUSB-N2 is
802.11n draft v2.0 compliant while maintaining full backwards compatibility with the Wireless-G
(802.11g) and Wireless-B (802.11b) standards. This next generation standard utilizes advanced
MIMO (Multiple-In, Multiple-Out) technology to deliver incredible speed and range. With wireless
speeds up to 300Mbps and extended coverage, there is enough bandwidth to simultaneously
stream video and audio, play online games, transfer large files, make VoIP calls and surf the
Internet. With security being a key consideration, SMCWUSB-N2 supports the latest WPA and
WPA2 wireless encryption standards, which prevent unauthorized access to wireless networks
and ensure data is secure. Wireless security can also be set up easily using Wi-Fi Protected
SetupTM (WPS) that enables push button or PIN configuration. The SMCWUSB-N2 includes an
easy installation wizard which guides you step-by-step through the process. Once installed the
WLAN utility allows you to scan for available wireless networks and manage multiple network
profiles so connecting becomes instantaneous.
1.2 Features
¾ IEEE802.11n draft v2.0 compliant
¾ Wireless speeds up to 300Mbps
¾ Increased speeds & coverage - up to 5x the speed of 802.11g
¾ Fully backwards compatible with 802.11b/g wireless networks
¾ Stream HD video, Listen to digital music, Play online games, Transfer large files, Make
VoIP calls & Surf the Internet simultaneously
¾ WEP 64-/128-Bit, WPA & WPA2 wireless encryption
¾ EZ Installation Wizard for easy installation
¾ Supports Windows 2000/XP/Vista
¾ WLAN management utility
¾ Two internal antennas (two receivers and two transmitters)
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1.3 LED Status
LED Indications Status Working Status
Status Blue
Activity Blue
Flashing Alternately The adapter is scanning for a networking
connection.
Status Blue
Activity Blue
Intermittently The adapter is connected but is not transmitting or
receiving data.
Status Blue
Activity Blue
Flashing The adapter is transmitting or receiving data.
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Chapter 2. Installation Guide
2.1 Hardware Installation
There are two options for installing the SMC Adapter:
Option 1: Plug the Adapter directly into the USB port on your computer.
Option 2: Connect the Adapter and your computer through the USB extension cable in the
package.
The LED will light up when the Adapter is installed successfully and the PC is switched on.
2.2 Software Installation
2.2.1 Overview
The SMCWUSB-N2 EZ Installation Wizard will guide you through the Installation procedure for
Windows XP. The Setup Wizard will install the SMCWUSB-N2 Wireless Utility and drivers.
When you install the hardware prior to before installing the software, the system will prompt
“Found New Hardware Wizard”, click Cancel, and run the Setup Wizard program on the
CD-ROM.
The Setup steps for Windows 2000 and XP are similar. The next section of this manual uses
Windows XP as an example.
For the Setup steps in Windows Vista, please follow the onscreen instructions.
2.2.2 Software Installation for Windows XP
1. Insert the EZ Installation & Documentation CD into your CD-ROM drive. The CD will auto
run. Click Install/Remove Driver and Utility and follow the on-screen instructions.
) Note:
If a “Software Installation” warning appears during installation, click Continue Anyway.
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Figure 2-1
2. The InstallShield Wizard prompts you for confirmation. Click Next to continue.
Figure 2-2
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3. Choose the Setup type. It is recommended that you select Install SMC Wireless Utility
and Drivers. Select Install Drivers only if you prefer to use Windows to configure and
manage your wireless network connections. Click Next to continue.
Figure 2-3
4. In the Destination Folder screen you are asked to confirm the Destination Folder for the
application software. You may change the destination folder to another location. Click
Browse to change the destination location for the software and click Next.
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Figure 2-4
5. In the Program Folder screen you may create a new folder name for the software or select
one from the Existing Folders list. It is recommended that you keep the default setting.
Click Next to continue the installation.
Figure 2-5
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6. The following screen appears. Click OK to continue the Installation.
Figure 2-6
7. The wizard now begins installation.
Figure 2-7
) Note:
1) In Windows XP, if the following warning appears (Figure 2-8), click Continue Anyway to
continue the installation. The SMC drivers have been tested thoroughly and are able to
work with the Windows operating system.
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Figure 2-8
8. Click Finish to complete the installation and exit the Wizard.
Figure 2-9
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Chapter 3. Configuration for Windows XP
The EZ Connect™ N 802.11n Wireless USB 2.0 Adapter can be configured by the
SMCWUSB-N2 Wireless Utility in Windows 2000 and XP. This chapter explains how to
configure and use the SMC Wireless Utility program.
For the configuration in Windows Vista, please refer to Chapter 4.
After completing the installation procedure, the Adapter’s tray icon will appear in the lower
right tray bar on your PC. .
If the icon is gray, there is no connection.
If the icon is red, there is poor signal strength and the RSSI is less than 5dB.
If the icon is yellow, there is poor signal strength and the RSSI is between 5dB and 10dB.
If the icon is green, there is good signal strength and the RSSI is between 10dB and 20dB.
If the icon is green (full bar), there is excellent signal strength and the RSSI is more than
20dB.
Double-click the icon and the SMCWUSB-N2 Wireless Utility will run. You can also run the
utility by clicking the Start →Programs →SMCWUSB-N2 802.11n Wireless Utility →
SMCWUSB-N2 802.11n Wireless Utility. The SMCWUSB-N2 Wireless Utility provides some
integrated and easy tools to:
¾ Display current status information
¾ Edit and add configuration profiles
¾ Display current diagnostics information
The section below introduces the above capabilities.
3.1 Current Status
The Current Status tab contains general information about the program and its operations. The
Current Status tab does not need any configurations.
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Figure 3-1
The following table describes the items on the Current Status screen.
¾ Profile Name - This shows the name of current selected configuration profile. The
configuration of Profile name will be described on the General tab of Profile Management.
¾ Link Status - This shows whether the station is associated to the wireless network.
¾ Wireless Mode - This displays the wireless mode of the connected network.
¾ Network Type - The type of network and the station currently connected are shown here.
The options include:
• Infrastructure (access point)
• Ad Hoc
) Note:
You can configure the network type and wireless mode on the Advanced tab of Profile
Management.
¾ IP Address - This displays the IP address of your computer.
¾ Control Channel - This indicates the channel that the network uses.
¾ Data Encryption - This indicates the encryption type the driver is using. You can configure
it on the Security tab of Profile Management.
¾ Server Based Authentication - This indicates whether the server based authentication is
used.
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¾ Signal Strength - This indicates the strength of the signal.
Click Advanced on the screen above to view other detailed information about the program and
its operations.
3.2 Profile Management
Click the Profile Management tab of the SMCWUSB-N2 Wireless Utility to configure your
wireless network connection. The Profile Management screen provides tools to:
¾ Add a new Profile
¾ Modify a Profile
¾ Remove a Profile
¾ Activate a Profile
¾ Import a Profile
¾ Export a Profile
¾ Scan Available Networks
¾ Order profiles
Figure 3-2
3.2.1 Add or Modify a Configuration Profile
To add a new configuration profile, click New on the Profile Management tab. To modify a
configuration profile, select the configuration profile from the Profile list and click Modify. Then
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you will see the Management dialog box (Figure 3-3).
1. Configure the General tab
¾ Profile Name - Enter the Profile name which identifies the configuration profile. This name
must be unique. Note that the profile names are not case-sensitive.
¾ Client Name - Enter the Profile name which identifies the client machine.
¾ Network Names (SSIDs) - Enter the SSID or the name of the Wireless Network you wish
to connect to. This field allows a maximum limit of 32 characters.
Figure 3-3
2. Configure the Security tab
Click the Security tab to configure the security settings of the profile. To define the security
mode, select the radio button of the desired security mode as follows.
) Note:
You must configure the security type and password to be the same as what is set up on your
wireless router or access point. If you wish to connect to a wireless network that is secured (with
password), please first gather the security type and password set up on your wireless router or
access point.
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Figure 3-4
¾ WPA/WPA2: Wi-Fi Protected Access
¾ WPA/WPA2 Passphrase: Wi-Fi Protected Access Passphrase (Recommended for
maximum security)
¾ 802.1x: Enables 802.1x security.
¾ Pre-Shared Key (Static WEP): Enables the use of shared keys that are defined on both
the access point and the station. To define shared encryption keys, choose the Shared Key
radio button and click Configure to fill in the Define Shared Keys window (shown in Figure
3-5).
¾ None: No security (not recommended).
) Note:
1. The WEP security mode is not available for 802.11n.
2. If the access point which the Adapter is associated has WEP set and the client has WEP
enabled, make sure that Allow Association to Mixed Cells is checked on the Security tab to
allow association. To complete WEP encryption configuration, you must select the 802.11
Authentication Mode as appropriate on the Advanced tab of this Profile Management
dialog.
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To configure the Encryption Keys under the Pre-Shared keys (Static WEP) Security mode:
Figure 3-5
) Note:
Select different Security Options, the configurations are different; you can select the
appropriate security option and configure the exact key as your need.
3. Configure the Advanced tab
This screen below allows you to make advanced configuration for the profile.
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Figure 3-6
¾ Power Save Mode - Please select the power save mode from the drop-down list.
• Maximum - Selects maximum mode to let the access point buffer incoming messages
for the Adapter. The Adapter will detect the access point if any messages are waiting
periodically.
• Normal (Default) - Normal mode uses maximum when retrieving a large number of
packets and switches back to Power Save mode after retrieving the packets.
• Off - Powers up the Wireless USB Adapter continuously for a short message response
time.
¾ Network Type:
• Infrastructure - All wireless clients connect to a single access point or wireless router.
• Ad-Hoc - Two or more wireless clients communicate directly to each other. Ad-hoc
mode is also known as peer-to-peer communication. To set up an ad-hoc network,
configure all the clients (such as two or more SMCWUSB-N2) in ad-hoc mode. Use
the same SSID and channel for each other.
) Note:
1) An Infrastructure network contains an Access Point or wireless router. All the wireless
devices or clients will connect to the wireless router or access point.
2) An Ad-Hoc network contains only clients, such as laptops with wireless desktop adapters. All
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the adapters must be in Ad-Hoc mode to communicate.
¾ Wireless Mode: Specifies 2.4 GHz 300 Mbps, 2.4 GHz 54 Mbps or 2.4 GHz 11 Mbps
operation in an access point network. The Wireless adapter must match the wireless mode
of the access point with which it associates.
¾ Wireless Mode when Starting an Ad Hoc Network: Specifies 2.4 GHz 300/54/11 Mbps
to start an Ad Hoc network if no matching network name is found after scanning all
available modes. This mode also allows the selection of the channel that the Wireless
Adapter uses. The channels available depend on the regulatory domain. If the adapter
finds no other ad hoc adapters, the channel that the adapter starts the ad hoc network with
will be selected automatically. The Adapter must match the wireless mode and channel of
the clients it associates.
¾ 802.11 Authentication Mode: Select which mode the Adapter uses to authenticate to an
access point:
• Automatic causes the adapter to attempt authentication using shared, but switches it
to open authentication if shared fails.
• Open System enables an adapter to attempt authentication regardless of its WEP
settings. It will only associate with the access point if the WEP keys on both the
adapter and the access point match.
• Shared-key only allows the adapter to associate with access points that have the
same WEP key.
For infrastructure (access point) networks, click Preferred APs… to specify up to four access
points for the client adapter. Enter the MAC Addresses for the preferred access points. The four
access points have different priorities; the frontal has the higher priority.
Figure 3-7
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3.2.2 Remove a profile
1. Go to the Profile Management tab (shown in Figure 3-2).
2. Select the profile name in the Profiles List.
3. Click Remove.
) Note:
The profile being used cannot be removed.
3.2.3 Switch to another Profile
1. Go to the Profile Management tab (shown in Figure 3-2).
2. Select the profile name required in the Profiles List.
3. Click Activate.
3.2.4 Export a Profile
1. On the Profile Management tab (shown in Figure 3-2), highlight the profile to export.
2. Click Export…, the Export Profile window will appear as below.
3. Browse the directory to export the profile to.
4. Click Save. The profile should then be exported to the specified location.
Figure 3-8
3.2.5 Import a Profile
1. From the Profile Management screen (shown in Figure 3-2), click Import…. The Import
Profile will appear as below.
2. Browse to the directory where the profile is located.
3. Highlight the profile name.
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4. Click Open, the imported profile will then appear in the Profiles List.
Figure 3-9
3.2.6 Scan Available Networks
1. Click Scan on the Profile Management tab (Figure 3-2), the Available Infrastructure and Ad
Hoc Networks window will appear as below.
2. Click Refresh to refresh the list at any time.
3. Highlight a Network Name (SSID) and click Activate to connect to the network. If no
configuration profile exists for that network, the Profile Management window will open the
General tab. Fill in the Profile name and click OK to create the configuration profile for the
network.
Figure 3-10
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3.2.7 Auto Profile Selection Management
The auto selection feature allows the adapter to automatically select a profile from the list of
profiles and use it to connect to the network. To add a new profile into the Auto Selected
Profiles list, please follow these steps.
1. On the Profile Management screen (Figure 3-2), click Order Profiles….
2. The Auto Profiles Selection Management window will appear (Figure 3-11) with a list of
created profiles in the Available Profiles section.
Figure 3-11
3. Highlight the profile to add to Auto Selected Profiles and click Add. The profile will appear
in the Auto Selected Profiles box.
4. Highlight a profile in the Auto Selected Profiles box.
5. Click Move Up or Move Down as appropriate.
) Note:
The first profile in the Auto Selected Profiles box has highest priority, while the last profile has the
lowest priority.
6. Click OK.
7. Check the Auto Select Profiles checkbox on the Profile Management tab (Figure 3-2).
) Note:
When auto profile selection is enabled by checking Auto Select Profiles on the Profile
Management tab, the adapter will scan for an available network. The profile with the highest
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priority and the same SSID as one of the found networks will be selected for network connection.
If the connection fails, the client adapter will try the next highest priority profile that matches the
SSID until a successful network connection is built.
3.3 Diagnostics
The Diagnostics tab of the SMCWUSB-N2 Wireless Utility provides tools to retrieve receiving
and transmitting statistics. The Diagnostics tab does not require any configuration.
The Diagnostics tab lists the following receiving and transmitting diagnostics for frames
received or transmitted by the SMCWUSB-N2 adapter:
¾ Multicast frames transmitted and received
¾ Broadcast frames transmitted and received
¾ Unicast frames transmitted and received
¾ Total bytes transmitted and received
Figure 3-12
3.3.1 Check Driver Information
Click the Adapter Information button in the screen above to view the adapter information,
including general information about the wireless network adapter and the Network Driver
Interface Specification (NDIS) driver. Access the adapter information from the Diagnostics tab.
¾ Card Name - The name of the wireless network adapter.
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¾ MAC Address - The MAC address of the wireless network adapter.
¾ Driver - The driver name and path of the wireless network adapter driver.
¾ Driver Version - The version of the wireless network adapter driver.
¾ Driver Date - The creation date of the wireless network adapter driver.
¾ Client Name - The name of the client computer.
3.3.2 Check Receive and Transmit Statistical Information
The Advanced Statistics screen shows detailed receiving and transmitting diagnostics for the
SMCWUSB-N2 adapter.
Figure 3-13
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Chapter 4. Configuration for Windows Vista
After installing the SMCWUSB-N2 adapter on Windows Vista, the Wireless Network Connection
message box appears.
Figure 4-1
A green icon indicates that the connection has been established. A gray icon
indicates no connection.
If the icon does not appear, please follow the steps below. If the icon still does not appear, the
driver may be installed incorrectly or the adapter is unplugged, please try again.
1. Right-click the icon in your system tray, then click Connect to a network.
Figure 4-2
2. The screen that appears displays available wireless networks. Highlight the network that
you wish to connect to and click Connect.
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Figure 4-3
3. To continue, click Connect Anyway. Click the Cancel button to end the Installation.
Figure 4-4
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4. Click close to exit.
Figure 4-5
5. The screen below will appear if the connection is successful.
Figure 4-6
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Chapter 5. WPS configuration
The Wi-Fi Protected Setup (WPS) function allows you to establish a wireless connection with
your WPS-enabled wireless router or access point easily, using either Push Button
Configuration (PBC) method or PIN method.
Install the WPS software on your computer. Insert the EZ Installation & Documentation CD into
your CD-ROM drive. The CD will auto run. Click Install/Remove WPS (WiFi Protected Setup).
Figure 5-1
Follow the on-screen instructions to complete the WPS installation. After that, the WPS function
can be enabled. The following section introduces two ways to configure WPS.
5.1 PBC (Push Button Configuration) method
1. On the management interface of your wireless router/AP, make sure WPS is enabled.
Press the WPS button on your WPS-enabled wireless router or access point for 4 seconds.
Within two minutes, press the WPS button on the SMCWUSB-N2 adapter to join the
wireless network.
2. Double click the WPS icon on the desktop to start the WPS Utility. Click Next to
continue.
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Figure 5-2
3. Select Push the button on my access point and click Next.
Figure 5-3
4. Wait for the following screen to appear. Click Finish to complete the WPS configuration.
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Figure 5-4
5.2 PIN method
There are two ways to configure the WPS by PIN method:
1) Enter the PIN for SMCWUSB-N2 into your AP device
2) Enter the PIN from your AP device into the SMCWUSB-N2 Wireless Utility.
Following are the detailed configuration procedure of each way.
5.2.1 Enter a PIN into your AP device
1. Double click the icon on the desktop to open the WPS Utility. Click Next to continue.
Select the second option Enter a PIN into my access point or a registrar. Remember the
PIN displayed in the screen and click Next.
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Figure 5-5
2. On the management interface of your wireless router/AP, select PIN as the WPS method.
Enter the PIN value shown in Figure 5-5 and connect.
5.2.2 Enter the PIN from your AP device
1. Open the WPS Utility and click Next to continue. Select the third option Enter the PIN
from my access point. Enter the PIN value of your router or access point. The PIN value
can usually be found on the bottom of the device or from the management interface of your
router/AP. Click Next.
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SMCWUSB-N2 802.11n Wireless USB 2.0 Adapter
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Appendix A: Specifications
General Specifications
Interface USB 2.0 Interface
Standards IEEE802.11n (draft); IEEE802.11g; IEEE802.11b
Operating System Windows 2000, XP and Vista
Radio Data Rate
11b:1/2/5.5/11Mbps
11g:6/9/12/18/24/36/48/54Mbps
11n:Up to 300Mbps
Modulation
11b: CCK,QPSK,BPSK;
11g: OFDM;
11n: QPSK,BPSK,16-QAM,64-QAM
Media Access Protocol CSMA/CA with ACK
Data Security WPA/WPA2; 64/128-bit WEP; TKIP/AES
Frequency 2.4 ~ 2.4835GHz
Spread Spectrum Direct Sequence Spread Spectrum (DSSS)
Safety & Emissions FCC, CE
Environmental and Physical Specifications
Operating Temp. 0 ~40°C (32 ~104°F)
Storage Temp. -20 ~ 70°C (-4 ~158°F)
Humidity 10% ~ 95% RH, Non-condensing
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SMCWUSB-N2 802.11n Wireless USB 2.0 Adapter
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Appendix B: Glossary
¾ 802.11b - The 802.11b standard specifies a wireless product networking at 11 Mbps using
direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio
spectrum at 2.4GHz, and WEP encryption for security. 802.11b networks are also referred to
as Wi-Fi networks.
¾ 802.11g - specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 802.11b devices,
and WEP encryption for security.
¾ 802.11n - 802.11n builds upon previous 802.11 standards by adding MIMO (multiple-input
multiple-output). MIMO uses multiple transmitter and receiver antennas to allow for increased
data throughput via spatial multiplexing and increased range by exploiting the spatial diversity,
perhaps through coding schemes like Alamouti coding. The Enhanced Wireless Consortium
(EWC)[3] was formed to help accelerate the IEEE 802.11n development process and promote
a technology specification for interoperability of next-generation wireless local area
networking (WLAN) products.
¾ Ad-hoc Network - An ad-hoc network is a group of computers, each with a Wireless Adapter,
connected as an independent 802.11 wireless LAN. Ad-hoc wireless computers operate on a
peer-to-peer basis, communicating directly with each other without the use of an access point.
Ad-hoc mode is also referred to as an Independent Basic Service Set (IBSS) or as
peer-to-peer mode, and is useful at a departmental scale or SOHO operation.
¾ DSSS - (Direct-Sequence Spread Spectrum) - DSSS generates a redundant bit pattern for all
data transmitted. This bit pattern is called a chip (or chipping code). Even if one or more bits
in the chip are damaged during transmission, statistical techniques embedded in the receiver
can recover the original data without the need of retransmission. To an unintended receiver,
DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband
receivers. However, to an intended receiver (i.e. another wireless LAN endpoint), the DSSS
signal is recognized as the only valid signal, and interference is inherently rejected (ignored).
¾ FHSS - (Frequency Hopping Spread Spectrum) - FHSS continuously changes (hops) the
carrier frequency of a conventional carrier several times per second according to a
pseudo-random set of channels. Because a fixed frequency is not used, and only the
transmitter and receiver know the hop patterns, interception of FHSS is extremely difficult.
¾ Infrastructure Network - An infrastructure network is a group of computers or other devices,
each with a Wireless Adapter, connected as an 802.11 wireless LAN. In infrastructure mode,
the wireless devices communicate with each other and to a wired network by first going
through an access point. An infrastructure wireless network connected to a wired network is
referred to as a Basic Service Set (BSS). A set of two or more BSS in a single network is
referred to as an Extended Service Set (ESS). Infrastructure mode is useful at a corporation
scale, or when it is necessary to connect the wired and wireless networks.
¾ Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique
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SMCWUSB-N2 802.11n Wireless USB 2.0 Adapter
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developed by the military for use in reliable, secure, mission-critical communications systems.
It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other
words, more bandwidth is consumed than in the case of narrowband transmission, but the
trade off produces a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is
not tuned to the right frequency, a spread-spectrum signal looks like background noise.
There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency
Hopping Spread Spectrum (FHSS).
¾ SSID - A Service Set Identification is a thirty-two character (maximum) alphanumeric key
identifying a wireless local area network. For the wireless devices in a network to
communicate with each other, all devices must be configured with the same SSID. This is
typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in
the wireless Access Point and to the wireless network name. See also Wireless Network
Name and ESSID.
¾ WEP - (Wired Equivalent Privacy) - A data privacy mechanism based on a 64-bit or 128-bit or
152-bit shared key algorithm, as described in the IEEE 802.11 standard. To gain access to a
WEP network, you must know the key. The key is a string of characters that you create.
When using WEP, you must determine the level of encryption. The type of encryption
determines the key length. 128-bit encryption requires a longer key than 64-bit encryption.
Keys are defined by entering in a string in HEX (hexadecimal - using characters 0-9, A-F) or
ASCII (American Standard Code for Information Interchange – alphanumeric characters)
format. ASCII format is provided so you can enter a string that is easier to remember. The
ASCII string is converted to HEX for use over the network. Four keys can be defined so that
you can change keys easily.
¾ Wi-Fi - A trade name for the 802.11b wireless networking standard, given by the Wireless
Ethernet Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry standards
group promoting interoperability among 802.11b devices.
¾ WLAN - (Wireless Local Area Network) - A group of computers and associated devices
communicate with each other wirelessly, which network serving users are limited in a local
area.
¾ WPA - (Wi-Fi Protected Access) - A wireless security protocol that uses TKIP (Temporal Key
Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.
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