LINKSYS WUSB54GSC Compact Wireless-G USB Network Adapter w/SpeedBoos User Manual Book
LINKSYS LLC Compact Wireless-G USB Network Adapter w/SpeedBoos Book
LINKSYS >
Manual
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Model No.
USB Network Adapter
Wireless-G
WUSB54GSC
User Guide
WIRELESS
GHz
2.4
802.11g
Compact
with SpeedBooster
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Compact Wireless-G USB Network Adapter with SpeedBooster
Copyright and Trademarks
Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco
Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2006 Cisco Systems, Inc. All
rights reserved. Other brands and product names are trademarks or registered trademarks of their respective
holders.
How to Use this User Guide
This User Guide has been designed to make understanding networking with the Compact Wireless-G USB Adapter
easier than ever. Look for the following items when reading this User Guide:
In addition to these symbols, there are definitions for technical terms that are presented like this:
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure numbers and descriptions can also be found in the "List of Figures" section in the “Table of Contents”.
This exclamation point means there is a Caution or warning and is something that
could damage your property or the Compact Wireless-G USB Adapter.
This checkmark means there is a Note of interest and is something you should
pay special attention to while using the Compact Wireless-G USB Adapter.
This question mark provides you with a reminder about something you might need
to do while using the Compact Wireless-G USB Adapter.
word: definition.
Figure 0-1: Sample Figure Description
WUSB54Gv4-UG-50418NC BW
WARNING: This product contains chemicals, including lead, known
to the State of California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
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Compact Wireless-G USB Network Adapter with SpeedBooster
Table of Contents
Chapter 1: Introduction 1
Welcome 1
What’s in this Guide? 2
Chapter 2: Planning your Wireless Network 4
Network Topology 4
Roaming 4
Network Layout 5
Chapter 3: Getting to Know the Compact Wireless-G USB Network Adapter 6
The LED Indicators 6
Chapter 4: Setting up and Connecting the USB Adapter 7
Starting the Setup Wizard 7
Connecting the Adapter 8
Creating a Profile 9
Setting Up the Adapter with SecureEasySetup 10
Setting Up the Adapter with Available Networks 12
Setting Up the Adapter with Manual Setup 15
Chapter 5: Using the Wireless Network Monitor 22
Accessing the Wireless Network Monitor 22
Link Information Screens 22
SecureEasySetup 25
Site Survey 27
Profiles 28
Creating a New Profile 29
Appendix A: Troubleshooting 30
Common Problems and Solutions 30
Frequently Asked Questions 31
Appendix B: Using Windows XP Wireless Configuration 34
Appendix C: Wireless Security 37
Security Precautions 37
Security Threats Facing Wireless Networks 37
Appendix D: Windows Help 40
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Compact Wireless-G USB Network Adapter with SpeedBooster
List of Figures
Figure 3-1: Front Panel 6
Figure 4-1: Setup Wizard’s Welcome Screen 7
Figure 4-2: Setup Wizard’s License Agreement 7
Figure 4-3: The Connecting the Adapter Screen 8
Figure 4-4: SecureEasySetup 9
Figure 4-5: Available Wireless Network 9
Figure 4-6: SecureEasySetup 10
Figure 4-7: SecureEasySetup 10
Figure 4-8: The SecureEasySetup Logo and Location 10
Figure 4-9: SecureEasySetup Complete 11
Figure 4-10: Available Wireless Network 12
Figure 4-11: WEP Key Needed for Connection 12
Figure 4-12: WPA-Personal Needed for Connection 13
Figure 4-13: WPA-Personal 2 Needed for Connection 13
Figure 4-14: The Congratulations Screen 14
Figure 4-15: Available Wireless Network 15
Figure 4-16: Network Settings 15
Figure 4-17: Wireless Mode 16
Figure 4-18: Ad-Hoc Mode Settings 16
Figure 4-19: Wireless Security 17
Figure 4-20: Wireless Security - WEP 17
Figure 4-21: Wireless Security - WPA Personal 18
Figure 4-22: Wireless Security - WPA Personal 2 18
Figure 4-23: Wireless Security - WPA Enterprise - EAP-TLS 19
Figure 4-24: Wireless Security - WPA Enterprise - PEAP 19
Figure 4-25: Wireless Security - RADIUS - EAP-TLS 20
Figure 4-26: Wireless Security - RADIUS - PEAP 20
Figure 4-27: Confirm New Settings 21
Figure 4-28: Congratulations 21
Figure 4-29: 21
Figure 5-1: Wireless Network Monitor Icon 22
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Compact Wireless-G USB Network Adapter with SpeedBooster
Figure 5-2: Link Information 22
Figure 5-3: Link Information - Wireless Network Status 23
Figure 5-4: Link Information - Wireless Network Statistics 24
Figure 5-5: The SecureEasySetup Button 25
Figure 5-6: The SecureEasySetup Logo and Location 25
Figure 5-7: SecureEasySetup 25
Figure 5-8: SecureEasySetup is Complete 26
Figure 5-9: Site Survey 27
Figure 5-10: WEP Key Needed for Connection 27
Figure 5-11: WPA-Personal Needed for Connection 27
Figure 5-12: WPA-Personal 2 Needed for Connection 28
Figure 5-13: Profiles 28
Figure 5-14: Import a Profile 28
Figure 5-15: Export a Profile 29
Figure 5-16: Create a New Profile 29
Figure B-1: Wireless Network Monitor Icon 34
Figure B-2: Windows XP - Use Windows XP Wireless Configuration 34
Figure B-3: Windows XP Wireless Configuration Icon 34
Figure B-4: Available Wireless Network 35
Figure B-5: No Wireless Security 35
Figure B-6: Network Connection - Wireless Security 36
Figure B-7: Wireless Network Connection 36
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Chapter 1: Introduction
Welcome
Compact Wireless-G USB Network Adapter with SpeedBooster
Chapter 1: Introduction
Welcome
Thank you for choosing the Compact Wireless-G USB Network Adapter with SpeedBooster. With this Adapter, your
wireless networking experience will be faster and easier than ever.
How does the Adapter do this? Like all wireless products, the Adapter allows for greater range and mobility
within your wireless network. Connecting to your PC via the USB port means that this Adapter leaves the PC’s
slots open for other purposes. This adapter communicates over the 802.11g wireless standard, one of the newest
wireless standards, to communicate with your network.
But what does all of this mean?
Networks are useful tools for sharing computer resources. You can access one printer from different computers
and access data located on another computer's hard drive. Networks are even used for playing multiplayer video
games. So, networks are not only useful in homes and offices, they can also be fun.
PCs equipped with wireless cards and adapters can communicate without cumbersome cables. By sharing the
same wireless settings, within their transmission radius, they form a wireless network.
And now, with SecureEasySetup, setting up your network and your Compact Wireless-G USB Network Adapter is
easier than ever.
Use the instructions in this Guide to help you connect the Adapter, set it up, and configure it for your network.
These instructions should be all you need to get the most out of the Adapter.
802.11g: an IEEE wireless networking standard that specifies a
maximum data transfer rate of 54Mbps, an operating frequency
of 2.4GHz, and backward compatibility with 802.11b devices.
adapter: a device that adds network functionality to your PC.
network: a series of computers or devices
connected for the purpose of data sharing, storage,
and/or transmission between users.
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Chapter 1: Introduction
What’s in this Guide?
Compact Wireless-G USB Network Adapter with SpeedBooster
What’s in this Guide?
This user guide covers the steps for setting up and using the Compact Wireless-G USB Network Adapter.
• Chapter 1: Introduction
This chapter describes the Adapter’s applications and this User Guide.
• Chapter 2: Planning Your Wireless Network
This chapter discusses a few of the basics about wireless networking.
• Chapter 3: Getting to Know the Compact USB Adapter
This chapter describes the physical features of the Adapter.
• Chapter 3: Setting Up and Connecting the USB Adapter
This chapter shows you how to setup and connect the Adapter.
• Chapter 4: Using the Wireless Network Monitor
This chapter show you how to use the Adapter’s Wireless Network Monitor.
• Appendix A: Troubleshooting
This appendix describes some problems and solutions, as well as frequently asked questions, regarding
installation and use of the Adapter.
• Appendix B: Using Windows XP Wireless Configuration
This appendix describes how Windows XP users can use Window’s built-in wireless configuration to monitor
their Adapter.
• Appendix C: Wireless Security
This appendix discusses security issues regarding wireless networking and measures you can take to help
protect your wireless network.
• Appendix D: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as installing
the TCP/IP protocol.
• Appendix E: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
• Appendix F: Specifications
This appendix provides the Adapter’s technical specifications.
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Chapter 1: Introduction
What’s in this Guide?
Compact Wireless-G USB Network Adapter with SpeedBooster
• Appendix G: Warranty Information
This appendix supplies the Adapter’s warranty information.
• Appendix H: Regulatory Information
This appendix supplies the Adapter’s regulatory information.
• Appendix I: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.
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Chapter 2: Planning your Wireless Network
Network Topology
Compact Wireless-G USB Network Adapter with SpeedBooster
Chapter 2: Planning your Wireless Network
Network Topology
A wireless network is a group of computers, each equipped with one wireless adapter. Computers in a wireless
network must be configured to share the same radio channel. Several PCs equipped with wireless cards or
adapters can communicate with one another to form an ad-hoc network.
Linksys wireless adapters also provide users access to a wired network when using an access point or wireless
router. An integrated wireless and wired network is called an infrastructure network. Each wireless PC in an
infrastructure network can talk to any computer in a wired network infrastructure via the access point or wireless
router.
An infrastructure configuration extends the accessibility of a wireless PC to a wired network, and can double the
effective wireless transmission range for two wireless adapter PCs. Since an access point is able to forward data
within a network, the effective transmission range in an infrastructure network can be doubled.
Roaming
Infrastructure mode also supports roaming capabilities for mobile users. Roaming means that you can move your
wireless PC within your network and the access points will pick up the wireless PC's signal, providing that they
both share the same channel and SSID.
Before enabling you consider roaming, choose a feasible radio channel and optimum access point position.
Proper access point positioning combined with a clear radio signal will greatly enhance performance.
access point: device that allows wireless-
equipped computers and other devices to
communicate with a wired network.
ad-hoc: a group of wireless devices
communicating directly with each other (peer-
to-peer) without the use of an access point
infrastructure: Configuration in which a
wireless network is bridged to a wired
network via an access point.
roaming: the ability to take a wireless
device from one access point's range to
another without losing the connection.
ssid: your wireless network’s name
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Chapter 2: Planning your Wireless Network
Network Layout
Compact Wireless-G USB Network Adapter with SpeedBooster
Network Layout
Linksys wireless access points and wireless routers have been designed for use with 802.11a, 802.11b, and
802.11g products. With 802.11g products communicating with the 802.11b standard and some products
incorporating both “a” and “g”, products using these standards can communicate with each other.
Access points and wireless routers are compatible with 802.11a, 802.11b and 802.11g adapters, such at the PC
Cards for your laptop computers, PCI Card for your desktop PC, and USB Adapters for when you want to enjoy USB
connectivity. Wireless products will also communicate with the wireless PrintServer.
When you wish to connect your wired network with your wireless network, network ports on access points and
wireless routers can be connected to any of Linksys's switches or routers.
With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at
www.linksys.com for more information about wireless products.
802.11b: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
11Mbps and an operating frequency of 2.4GHz.
switch: device that is the central point of connection for
computers and other devices in a network, so data can
be shared at full transmission speeds.
router: a networking device that connects multiple networks
together, such as a local network and the Internet.
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Chapter 3: Getting to Know the Compact Wireless-G USB Network Adapter
The LED Indicators
Compact Wireless-G USB Network Adapter with SpeedBooster
Chapter 3: Getting to Know the Compact Wireless-G USB
Network Adapter
The LED Indicators
The Adapter's LEDs display information about network activity.
Link Green. The Link LED flashes when there is network activity.
Figure 3-1: Front Panel
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Chapter 4: Setting up and Connecting the USB Adapter
Starting the Setup Wizard
Compact Wireless-G USB Network Adapter with SpeedBooster
Chapter 4: Setting up and Connecting the USB Adapter
The USB Adapter is set up with the Setup Wizard that comes on the CD enclosed with the Adapter. This chapter
will guide you through the setup procedure.
Starting the Setup Wizard
To begin the setup process, insert the Setup Wizard CD-ROM into your CD-ROM drive. The Setup Wizard should
run automatically, and the Welcome screen should appear. If it does not, click the Start button and choose Run.
In the field that appears, enter D:\setup.exe (if “D” is the letter of your CD-ROM drive).
On the Welcome screen, you have the following choices:
Click Here to Start - Click the Click Here to Start button to begin the software installation process.
User Guide - Click the User Guide button to open this User Guide.
Exit - Click Exit to exit the Setup Wizard.
1. To install the Adapter, click the Click Here to Start button on the Welcome screen.
2. After reading the License Agreement, click Next if you agree and want to continue the installation, or click
Cancel to end the installation.
3. Windows will begin copying the files onto your PC.
Figure 4-1: Setup Wizard’s Welcome Screen
Figure 4-2: Setup Wizard’s License Agreement
IMPORTANT: Do not connect the Adapter until you are instructed to
do so or the setup will not work.
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Chapter 4: Setting up and Connecting the USB Adapter
Connecting the Adapter
Compact Wireless-G USB Network Adapter with SpeedBooster
4. The Setup Wizard will now prompt you to connect the Adapter to your PC’s USB port. Once you’ve connect,
click Next.
5. Windows 98SE and ME users will need to restart their PCs.
Connecting the Adapter
1. Connect the Adapter’s connector to one of the USB ports on your computer.
Figure 4-3: The Connecting the Adapter Screen
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Chapter 4: Setting up and Connecting the USB Adapter
Creating a Profile
Compact Wireless-G USB Network Adapter with SpeedBooster
Creating a Profile
This Adapter features SecureEasySetup. This means that you can set it up with just the press of a button when
connecting to wireless routers or access points that also feature SecureEasySetup. Both devices on the network
must feature SecureEasySetup for this to work.
•Use SecureEasySetup. Use this option if you have a device on your network that supports SecureEasySetup.
•Skip. This option is used for networks with devices that do not have SecureEasySetup.
Available Wireless Network
The networks available to this Adapter will be listed on this screen.
•Refresh. Use this button to update the Available Wireless Network list.
•Connect. You can select one of the available networks and click the Connect button to connect to it.
The setup for each option is described, step by step, under the appropriate heading on the following pages.
Click Exit to close the Setup Wizard, if you wish to set up the Adapter later.
Figure 4-4: SecureEasySetup
Figure 4-5: Available Wireless Network
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with SecureEasySetup
Compact Wireless-G USB Network Adapter with SpeedBooster
Setting Up the Adapter with SecureEasySetup
With SecureEasySetup, setting up the Adapter is as simple as pushing a couple of buttons. Before you press any
buttons, though, you should locate the SecureEasySetup button on the device you’re connecting the Adapter to,
such as a wireless router or access point.
1. Click the SecureEasySetup button on the right hand side.
2. You will be asked to locate the SecureEasySetup button on the device with which the Adapter will be
communicating. If you are not sure where to find this button, click Where can I find the button?.
This will walk you through a couple of screens to help you find the button, which is usually located on the
front of the wireless router or access point.
Figure 4-6: SecureEasySetup
Figure 4-7: SecureEasySetup
Figure 4-8: The SecureEasySetup Logo and Location
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with SecureEasySetup
Compact Wireless-G USB Network Adapter with SpeedBooster
3. Press the Cisco logo or SecureEasySetup button on the wireless router or access point. When it turns white
and begins to flash, click the Next button on the Setup Wizard screen. The logo or button will stop flashing on
the wireless router or access point when the Adapter has been successfully added to the network. Repeat
this procedure for any additional SecureEasySetup device.
4. When SecureEasySetup is complete, you may save your configuration to a text file by clicking the Save
button, or print the configuration by clicking the Print button. Click Connect to Network to connect to your
network.
Congratulations! Setup is complete.
To check the link information, search for available wireless networks, or make additional configuration
changes, refer to Chapter 5: Using the Wireless Network Monitor.
NOTE: You can only add one SecureEasySetup device at a time.
Figure 4-9: SecureEasySetup Complete
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Available Networks
Compact Wireless-G USB Network Adapter with SpeedBooster
Setting Up the Adapter with Available Networks
If you’re not setting up the Adapter with SecureEasySetup, another method for setting up the Adapter is with the
available networks listed on the Available Wireless Network screen. The available networks are listed in the table
on the center of the screen by SSID. Select the wireless network you wish to connect to and click the Connect
button. (If you do not see your network listed, you can click the Refresh button to bring the list up again.) If the
network utilizes wireless security, you will need to configure security on the Adapter. If not, you will be taken
directly to the Congratulations screen.
1. If wireless security has been enabled on this network, you will see a wireless security screen. If your network
utilizes WEP (Wired Equivalent Privacy) encryption, the WEP Key Needed for Connection screen will appear. If
your network utilizes WPA-Personal (Wi-Fi Protected Access) encryption, the WPA-Personal Needed for
Connection screen will appear. If your network utilizes WPA-Personal 2 encryption, the WPA-Personal 2
Needed for Connection screen will appear.
WEP Key Needed for Connection
Select 64-bit or 128-bit.
Then, enter a passphrase or WEP key.
Passphrase - Enter a passphrase in the Passphrase field, so a WEP key is automatically generated. The
passphrase is case-sensitive and should not be longer than 16 alphanumeric characters. It must match the
passphrase of your other wireless network devices and is compatible with Linksys wireless products only. (If
you have any non-Linksys wireless products, enter the WEP key manually on those products.)
WEP Key - The WEP key you enter must match the WEP key of your wireless network. For 64-bit encryption,
enter exactly 10 hexadecimal characters. For 128-bit encryption, enter exactly 26 hexadecimal characters.
Valid hexadecimal characters are “0” to “9” and “A” to “F”.
Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel.
Figure 4-10: Available Wireless Network
Figure 4-11: WEP Key Needed for Connection
wep (wired equivalent privacy): a method of encrypting
network data transmitted on a wireless network for greater
security.
encryption: encoding data transmitted in a network.
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Available Networks
Compact Wireless-G USB Network Adapter with SpeedBooster
WPA-Personal Needed for Connection
Encryption - Select the type of algorithm you want to use, TKIP or AES, from the Encryption drop-down
menu.
Passphrase - Enter a Passphrase, also called a pre-shared key, of 8-63 characters in the Passphrase field.
Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel.
WPA-Personal 2 Needed for Connection
Enter a Passphrase of 8-63 characters in the Passphrase field.
Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel.
Figure 4-12: WPA-Personal Needed for Connection
Figure 4-13: WPA-Personal 2 Needed for Connection
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Available Networks
Compact Wireless-G USB Network Adapter with SpeedBooster
2. After the Adapter has been configured for the network, the Congratulations screen will appear. Click Connect
to Network to connect to your network.
Congratulations! Setup is complete.
To check the link information, search for available wireless networks, or make additional configuration
changes, refer to Chapter 5: Using the Wireless Network Monitor.
Figure 4-14: The Congratulations Screen
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
Setting Up the Adapter with Manual Setup
If you are not taking advantage of SecureEasySetup and your network is not listed with the available networks,
click Manual Setup on the Available Wireless Network screen to set up the adapter manually.
1. After clicking Manual Setup, the Network Settings screen will appear. If your network has a router or other
DHCP server, click the radio button next to Obtain network settings automatically (DHCP).
If your network does not have a DHCP server, click the radio button next to Specify network settings. Enter
an IP Address, Subnet Mask, Default Gateway, and DNS addresses appropriate for your network. You must
specify the IP Address and Subnet Mask on this screen. If you are unsure about the Default Gateway and DNS
addresses, leave these fields empty.
IP Address - This IP Address must be unique to your network.
Subnet Mask - The Adapter’s Subnet Mask must be the same as your wired network’s Subnet Mask.
Default Gateway - Enter the IP address of your network’s Gateway here.
DNS 1 and DNS 2 - Enter the DNS address of your wired Ethernet network here.
Click Next to continue, or click Back to return to the Available Wireless Network screen.
Figure 4-15: Available Wireless Network
Figure 4-16: Network Settings
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
2. The Wireless Mode screen shows a choice of two wireless modes. Click the Infrastructure Mode radio
button if you want to connect to a wireless router or access point. Click the Ad-Hoc Mode radio button if you
want to connect to another wireless device directly without using a wireless router or access point. Then,
enter the SSID for your network.
Infrastructure Mode - Use this mode if you want to connect to a wireless router or access point.
Ad-Hoc Mode - Use this mode if you want to connect to another wireless device directly without using a
wireless router or access point.
SSID - This is the wireless network name that must be used for all the devices in your wireless network. It is
case- sensitive and should be a unique name to help prevent others from entering your network.
Click Next to continue or Back to return to the previous screen.
3. If you chose Infrastructure Mode, go to Step 4 now. If you chose Ad-Hoc Mode, the Ad-Hoc Mode Settings
screen will appear.
Select the correct Channel for your wireless network. The channel you choose should match the channel set
on the other devices in your wireless network. If you are unsure about which channel to use, keep the default
setting.
Then, select the Network Mode in which your wireless network will operate. In Mixed Mode, Wireless-B and
Wireless-G devices can both operate on the network, though at a slower speed. In G-Only Mode, no Wireless-
B devices can operate in the network.
Click Next to continue or click Back to change any settings.
Figure 4-17: Wireless Mode
Figure 4-18: Ad-Hoc Mode Settings
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
4. The Wireless Security screen will appear. This step will configure wireless security.
If your wireless network doesn’t use wireless security, select Disabled and then click the Next button to
continue. Proceed to Step 5.
Select WEP, WPA-Personal, WPA-Personal 2, WPA-Enterprise, or Radius for the Encryption Method. WEP
stands for Wired Equivalent Privacy, WPA (Wi-Fi Protected Access) Personal is a security standard stronger
than WEP encryption, WPA Personal 2 is a newer security standard stronger than WPA-Personal, RADIUS
stands for Remote Authentication Dial-In User Service and is utilized by WPA Enterprise as well. If you don’t
want to use encryption, select Disabled.
Then, click the Next button to continue or the Back button to return to the previous screen.
WEP
WEP - To use WEP encryption, select 64-bits or 128-bit characters from the drop-down menu, and enter a
passphrase or key.
WEP Key- The WEP key you enter must match the WEP key of your wireless network. If you are using 64-bit
WEP encryption, then the key must consist of exactly 10 hexadecimal characters. If you are using 128-bit
WEP encryption, then the key must consist of exactly 26 hexadecimal characters. Valid hexadecimal
characters are “0” to “9” and “A” to “F”.
Passphrase - Instead of manually entering a WEP key, you can enter a passphrase in the Passphrase field, so
a WEP key is automatically generated. This case-sensitive passphrase must match the passphrase of your
other wireless network devices and is compatible with Linksys wireless products only. (If you have any non-
Linksys wireless products, enter the WEP key manually on those products.)
TX Key - The default transmit key number is 1. If your network’s access point or wireless router uses transmit
key number 2, 3, or 4, select the appropriate number from the TX Key drop-down box.
Authentication -The default is set to Auto, where it auto-detects for Shared Key or Open system. Shared
Key is when both the sender and the recipient share a WEP key for authentication. Open key is when the
sender and the recipient do not share a WEP key for authentication. All points on your network must use the
same authentication type.
Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the
previous screen.
Figure 4-19: Wireless Security
encryption: encoding data transmitted in a network.
Figure 4-20: Wireless Security - WEP
wep (wired equivalent privacy): a method of encrypting
network data transmitted on a wireless network for greater
security.
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
WPA Personal
WPA Personal offers two encryption methods, TKIP and AES, with dynamic encryption keys. Select TKIP or
AES for encryption. Then enter a Passphrase that is 8-63 characters in length.
Encryption - Select the type of algorithm you want to use, TKIP or AES, from the Encryption drop-down
menu.
Passphrase - Enter a Passphrase, also called a pre-shared key, of 8-63 characters in the Passphrase field.
Click the Next button to continue or the Back button to return to the previous screen.
WPA Personal 2
Enter a Passphrase of 8-63 characters in the Passphrase field.
Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the
previous screen.
Figure 4-22: Wireless Security - WPA Personal 2
Figure 4-21: Wireless Security - WPA Personal
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
WPA Enterprise
WPA Enterprise features WPA security used in coordination with a RADIUS server. (This should only be used
when a RADIUS server is connected to the Router.) WPA Enterprise offers two authentication methods, EAP-
TLS and PEAP, as well as two encryption methods, TKIP and AES, with dynamic encryption keys.
Authentication - Select the authentication method your network is using, EAP-TLS or PEAP.
EAP-TLS
If you selected EAP-TLS, enter the login name of your wireless network in the Login Name field. Enter the
name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down
menu, select the certificate you have installed to authenticate you on your wireless network. Select the type
of encryption, TKIP or AES, from the Encryption drop-down menu.
Click the Next button to continue or the Back button to return to the previous screen.
PEAP
If you selected PEAP, enter the login name of your wireless network in the Login Name field. Enter the
password of your wireless network in the Password field. Enter the name of the authentication server in the
Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have
installed to authenticate you on your wireless network; if you want to use any certificate, keep the default
setting, Trust Any. Then select the authentication method (Inner Authen.) used inside the PEAP tunnel. Then,
select the type of encryption, TKIP or AES, from the Encryption drop-down menu.
Click the Next button to continue or the Back button to return to the previous screen.
Figure 4-24: Wireless Security - WPA Enterprise - PEAP
Figure 4-23: Wireless Security - WPA Enterprise -
EAP-TLS
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
RADIUS
RADIUS uses the security of a RADIUS server. (This should only be used when a RADIUS server is connected to
the Router.) It offers two authentication methods: EAP-TLS and PEAP.
Authentication - Select the authentication method your network is using, EAP-TLS or PEAP.
EAP-TLS
If you selected EAP-TLS, enter the login name of your wireless network in the Login Name field. Enter the
name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down
menu, select the certificate you have installed to authenticate you on your wireless network.
PEAP
If you selected PEAP, enter the login name of your wireless network in the Login Name field. Enter the
password of your wireless network in the Password field. Enter the name of the authentication server in the
Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have
installed to authenticate you on your wireless network; if you want to use any certificate, keep the default
setting, Trust Any. Then select the authentication method (Inner Authen.) used inside the PEAP tunnel.
Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the
previous screen.
Figure 4-25: Wireless Security - RADIUS - EAP-TLS
Figure 4-26: Wireless Security - RADIUS - PEAP
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Chapter 4: Setting up and Connecting the USB Adapter
Setting Up the Adapter with Manual Setup
Compact Wireless-G USB Network Adapter with SpeedBooster
5. The next screen displays all of the Adapter’s settings. If these are correct, you can save these settings to your
hard drive by clicking Save. Click Next to continue and finish the setup. If these settings are not correct, click
Back to change your settings. To exit the setup, click Exit.
6. After the software has been successfully installed, the Congratulations screen will appear. Click Connect to
Network to connect to your network. Clicking Return to Profiles screen will open the Wireless Network
Monitor’s Profiles screen. For more information about the Wireless Network Monitor, refer to Chapter 5: Using
the Wireless Network Monitor.
Congratulations! Setup is complete.
To check the link information, search for available wireless networks, or make additional
configuration changes, refer to Chapter 5: Using the Wireless Network Monitor.
Figure 4-27: Confirm New Settings
Figure 4-28: Congratulations
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22
Chapter 5: Using the Wireless Network Monitor
Accessing the Wireless Network Monitor
Compact Wireless-G USB Network Adapter with SpeedBooster
Chapter 5: Using the Wireless Network Monitor
Use the Wireless Network Monitor to check the link information, search for available wireless networks, or
create profiles that hold different configuration settings.
Accessing the Wireless Network Monitor
After Setting Up and Connecting the Adapter, the Wireless Network Monitor icon will appear in your PC’s system
tray. If the Wireless Network Monitor is enabled, then the icon will be green. If the Wireless Network Monitor is
disabled or the Adapter is not connected, then the icon will be gray.
Link Information Screens
The opening screen of the Wireless Network Monitor is the Link Information screen. From this screen, you can
find out how strong the current wireless signal is and how good the connection’s quality is. You can also click the
More Information button to view additional status and statistics about the current wireless connection. To
search for available wireless networks, click the Site Survey tab. To perform configuration changes or create
connection profiles, click the Profiles tab.
Link Information
The Link Information screen displays network mode, signal strength, and link quality information about the
current connection. It also provides a button to click for additional status information.
Ad-Hoc Mode or Infrastructure Mode - The screen indicates whether the Adapter is currently working in Ad-
Hoc or Infrastructure mode.
Signal Strength - The Signal Strength bar indicates signal strength.
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.
Click the More Information button to view additional information about the wireless network connection on the
Wireless Network Status screen.
Figure 5-1: Wireless Network Monitor Icon
Figure 5-2: Link Information
NOTE: The Wireless Network Monitor should only be
accessed AFTER connecting the Adapter. For more
information on Setting Up and Connecting the
Adapter, refer to Chapter 4: Setting Up and
Connecting the USB Adapter.
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Chapter 5: Using the Wireless Network Monitor
Link Information Screens
Compact Wireless-G USB Network Adapter with SpeedBooster
Wireless Network Status
The Wireless Network Status screen provides information on your current network settings.
Status - This shows the status of the wireless network connection.
SSID - This is the unique name of the wireless network.
Wireless Mode - The mode of the wireless network currently in use is displayed here.
Transfer Rate - The data transfer rate of the current connection is shown here.
Channel - This is the channel to which the wireless network devices are set.
Security - The status of the wireless security feature is displayed here.
Authentication - This is your wireless network’s authentication method.
IP Address - The IP Address of the Adapter is displayed here.
Subnet Mask - The Subnet Mask of the Adapter is shown here.
Default Gateway - The Default Gateway address of the Adapter is displayed here.
DNS - This is the DNS address of the Adapter.
DHCP Client - This displays the Adapter’s status as a DHCP client.
MAC Address- The MAC address of the wireless network’s access point or wireless router is shown here.
Signal Strength - The Signal Strength bar indicates the signal strength.
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.
Click the Back button to return to the initial Link Information screen. Click the Statistics button to go to the
Wireless Network Statistics screen. Click the Save to Profile button to save the currently active connection
settings to a profile.
Figure 5-3: Link Information - Wireless Network Status
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Chapter 5: Using the Wireless Network Monitor
Link Information Screens
Compact Wireless-G USB Network Adapter with SpeedBooster
Wireless Network Statistics
The Wireless Networks Statistics screen provides statistics on your current network settings.
Transmit Rate - This is the data transfer rate of the current connection. (In Auto mode, the Adapter dynamically
shifts to the fastest data transfer rate possible at any given time.)
Receive Rate - This is the rate at which data is received.
Packets Received - This shows the packets received by the Adapter, in real time, since connecting to the
wireless network or since the Refresh Statistics button was last pressed.
Packets Transmitted - This shows the packets transmitted from the Adapter, in real time, since connecting to
the wireless network or since the Refresh Statistics button was last pressed.
Bytes Received - This shows the bytes received by the Adapter, in real time, since connecting to the wireless
network or since the Refresh Statistics button was last pressed.
Bytes Transmitted - This shows the bytes transmitted by the Adapter, in real time, since connecting to the
wireless network or since the Refresh Statistics button was last pressed.
Driver Version - This shows the version of the Adapter’s driver.
Noise Level - This shows the level of background noise affecting the wireless signal. A lower reading translates
into a higher quality signal.
Signal Strength - This is the intensity of the wireless signal received by the Adapter.
Transmit Power - This is the power output at which the Adapter is transmitting.
Up Time - This indicates the length of the most recent connection to a wireless network.
Total Up Time - This indicates the cumulative total of the Adapter’s connection time.
Signal Strength - The Signal Strength bar indicates the signal strength.
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.
Click the Back button to return to the initial Link Information screen. Click the Status button to go to the Wireless
Network Status screen. Click the Save to Profile button to save the currently active connection settings to a
profile. Click the Refresh button to reset the statistics.
Figure 5-4: Link Information - Wireless Network
Statistics
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25
Chapter 5: Using the Wireless Network Monitor
SecureEasySetup
Compact Wireless-G USB Network Adapter with SpeedBooster
Figure 5-5: The SecureEasySetup Button
Figure 5-6: The SecureEasySetup Logo and Location
Figure 5-7: SecureEasySetup
SecureEasySetup
While using the Monitor, you might see the SecureEasySetup button on the right-hand side of the screen. This
button can be used to set up the Adapter, if this has not already been done. With SecureEasySetup, setting up the
Adapter is as simple as pushing a couple of buttons. Before you press any buttons, though, you should locate the
SecureEasySetup button on the device you’re connecting the Adapter to, such as a wireless router or access
point.
1. After clicking the SecureEasySetup button, you will be asked to locate the SecureEasySetup button on the
device with which the Adapter will be communicating. If you are not sure where to find this button, click
Where can I find the button?.
This will walk you through a couple of screens to help you find the button, which is usually located on the
front of the wireless router or access point.
If you’ve clicked the button by accident or do not wish to use SecureEasySetup, you can click Cancel to return
to the previous screen.
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Chapter 5: Using the Wireless Network Monitor
SecureEasySetup
Compact Wireless-G USB Network Adapter with SpeedBooster
NOTE: You can only add one SecureEasySetup device at a time.
Figure 5-8: SecureEasySetup is Complete
2. Press the Cisco logo or SecureEasySetup button on the wireless router or access point. When it turns white
and begins to flash, click the Next button on the Setup Wizard screen. The logo or button will stop flashing on
the wireless router or access point when the Adapter has been successfully added to the network. Repeat
this procedure for any additional SecureEasySetup device.
3. SecureEasySetup is now complete and a configuration profile will has been created automatically. You may
save your configuration profile to a text file by clicking the Save button, or print the configuration by clicking
the Print button. Click Connect to Network to connect to your network.
Congratulations! SecureEasySetup is complete.
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Chapter 5: Using the Wireless Network Monitor
Site Survey
Compact Wireless-G USB Network Adapter with SpeedBooster
Figure 5-9: Site Survey
Figure 5-10: WEP Key Needed for Connection
Figure 5-11: WPA-Personal Needed for Connection
Site Survey
The Site Survey screen displays a list of available networks in the table on the left. The table shows each
network’s SSID, Channel, and the quality of the wireless signal the Adapter is receiving. You may click SSID, CH
(Channel), or Signal, to sort by that field.
SSID - The SSID or unique name of the wireless network is displayed here.
CH - This is the channel that the network uses.
Signal - This is the percentage of signal strength, from 0 to 100%.
Site Information
For each network selected, the following settings are listed:
SSID - This the SSID or unique name of the wireless network.
Wireless Mode - This is the mode of the wireless network currently in use.
Channel - This is the channel to which the wireless network devices are set.
Security - The status of the wireless security feature is displayed here.
MAC Address- The MAC address of the wireless network’s access point is displayed here.
Refresh - Click the Refresh button to perform a new search for wireless devices.
Connect - To connect to one of the networks on the list, select the wireless network, and click the Connect
button. If the network has encryption enabled, a screen appear requiring security information.
If the network has the wireless security WEP encryption enabled, then you will see the WEP Key Needed for
Connection screen. Select the appropriate level of WEP encryption, 64-bit or 128-bit Then enter the network’s
Passphrase or WEP Key. To connect to the network, click Connect. To cancel the connection, click Cancel.
If the network has WPA Personal wireless security enabled, then you will see the WPA-Personal Needed for
Connection screen. Select the appropriate encryption type, TKIP or AES. Enter the network’s Passphrase or pre-
shared key in the Passphrase field. To connect to the network, click Connect. To cancel the connection, click
Cancel.
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Chapter 5: Using the Wireless Network Monitor
Profiles
Compact Wireless-G USB Network Adapter with SpeedBooster
If the network has WPA-Personal 2 wireless security enabled, then you will see the WPA-Personal 2 Needed for
Connection screen. Enter the network’s Passphrase or pre-shared key in the Passphrase field. To connect to the
network, click Connect. To cancel the connection, click Cancel.
Profiles
The Profiles screen lets you save different configuration profiles for different network setups. The table on the left
displays a list of available profiles with their profile names and SSIDs.
Profile - The name of the profile is displayed here.
SSID - The SSID or unique name of the wireless network is displayed here.
Profile Information
For each profile selected, the following are listed:
Wireless Mode - This is the mode of the wireless network currently in use.
Channel - This is the channel to which the wireless network devices are set.
Security - The status of the wireless security feature is displayed here.
Authentication - The authentication setting for the network is shown here.
Connect - To connect to a wireless network using a specific profile, select the profile, and click the Connect
button.
New - Click New to create a new profile. See Chapter 4, “Creating a New Profile,” for detailed instructions.
Edit - Select the profile you want to change, and then click Edit.
Import - Click Import to import a profile that has been saved in another location. Select the appropriate file, and
click the Open button.
Export - Select the profile you want to save in a different location, and click Export. Direct Windows to the
appropriate folder, and click the Save button.
Delete - Select the profile you want to delete, and then click Delete.
Figure 5-13: Profiles
Figure 5-14: Import a Profile
NOTE: If you want to export more than one profile, you have to export them one at a time.
Figure 5-12: WPA-Personal 2 Needed for Connection
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29
Chapter 5: Using the Wireless Network Monitor
Creating a New Profile
Compact Wireless-G USB Network Adapter with SpeedBooster
Creating a New Profile
On the Profiles screen, click the New button to create a new profile. Enter a name for the new profile, and click
the OK button. Click the Cancel button to return to the Profiles screen without entering a name.
For details on setting up a new connection profile, please refer to “Creating a Profile” in Chapter 4.
Figure 5-16: Create a New Profile
Figure 5-15: Export a Profile
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30
Appendix A: Troubleshooting
Common Problems and Solutions
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix A: Troubleshooting
This appendix provides solutions to problems usually encountered during the installation and operation of the
Adapter. Read the description below to solve your problems. If you can't find an answer here, check the Linksys
website at www.linksys.com.
Common Problems and Solutions
1.My computer does not recognize the USB Adapter.
• Make sure that the USB Adapter is properly inserted into the USB port.
• Also, make sure that the USB Controller is enabled in the BIOS. Check with your motherboard User Guide for
more information.
2. The USB Adapter does not work properly.
• Reinsert the USB Adapter into the notebook or desktop’s USB port.
• Right-click on My Computer, and select Properties. Select the Adapter, then chose the Device Manager tab,
and click on the Adapter. You will find the USB Adapter if it is installed successfully. If you see a yellow
exclamation mark, the resources may be conflicting and you must follow the steps below:
• Uninstall the driver software from your PC.
• Restart your PC and repeat the hardware and software installation as specified in this User Guide.
3. I cannot communicate with the other computers linked via Ethernet in the Infrastructure
configuration.
• Make sure that the notebook or desktop is powered on.
• Make sure that your USB Adapter is configured on the same channel, SSID, and WEP as the other computers
in the Infrastructure configuration.
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31
Appendix A: Troubleshooting
Frequently Asked Questions
Compact Wireless-G USB Network Adapter with SpeedBooster
Frequently Asked Questions
Can I run an application from a remote computer over the wireless network?
This will depend on whether or not the application is designed to be used over a network. Consult the
application’s user guide to determine if it supports operation over a network.
Can I play computer games with other members of the wireless network?
Yes, as long as the game supports multiple players over a LAN (local area network). Refer to the game’s user
guide for more information.
What is the IEEE 802.11b standard?
It is one of the IEEE standards for wireless networks. The 802.11b standard allows wireless networking hardware
from different manufacturers to communicate, provided that the hardware complies with the 802.11b standard.
The 802.11b standard states a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz.
What is the IEEE 802.11g standard?
It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware
from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard.
The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz.
What IEEE 802.11b features are supported?
The product supports the following IEEE 802.11b functions:
• CSMA/CA plus Acknowledge protocol
• Multi-Channel Roaming
• Automatic Rate Selection
• RTS/CTS feature
• Fragmentation
• Power Management
What IEEE 802.11g features are supported?
The product supports the following IEEE 802.11g functions:
• CSMA/CA plus Acknowledge protocol
• OFDM protocol
• Multi-Channel Roaming
• Automatic Rate Selection
• RTS/CTS feature
• Fragmentation
• Power Management
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32
Appendix A: Troubleshooting
Frequently Asked Questions
Compact Wireless-G USB Network Adapter with SpeedBooster
What is ad-hoc mode?
When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to
communicate directly with each other. The ad-hoc wireless network will not communicate with any wired
network.
What is infrastructure mode?
When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with a
wired network through a wireless access point.
What is roaming?
Roaming is the ability of a PC to communicate continuously while moving freely throughout an area greater than
that covered by a single access point. Before using the roaming function, the workstation must make sure that it
is the same channel number with the access point of dedicated coverage area.
To achieve true seamless connectivity, the wireless LAN must incorporate a number of different functions. Each
node and access point, for example, must always acknowledge receipt of each message. Each node must
maintain contact with the wireless network even when not actually transmitting data. Achieving these functions
simultaneously requires a dynamic RF networking technology that links access points and nodes. In such a
system, the user’s end node undertakes a search for the best possible access to the system. First, it evaluates
such factors as signal strength and quality, as well as the message load currently being carried by each access
point and the distance of each access point to the wired backbone. Based on that information, the node next
selects the right access point and registers its address. Communications between end node and host computer
can then be transmitted up and down the backbone.
As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in
touch with the original access point or whether it should seek a new one. When a node no longer receives
acknowledgment from its original access point, it undertakes a new search. Upon finding a new access point, it
then re-registers, and the communication process continues.
What is ISM band?
The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM
(Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available
worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in
the hands of users around the globe.
What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique 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
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33
Appendix A: Troubleshooting
Frequently Asked Questions
Compact Wireless-G USB Network Adapter with SpeedBooster
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).
What is DSSS? What is FHSS? And what are their differences?
Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that
is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical
channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-
Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip
(or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if
one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can
recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low
power wideband noise and is rejected (ignored) by most narrowband receivers.
Would the information be intercepted while transmitting on air?
The Adapter features two-fold protection in security. On the hardware side, as with Direct Sequence Spread
Spectrum technology, it has the inherent security feature of scrambling. On the software side, the Adapter offers
the encryption function (WEP) to enhance security and access control.
What is WEP?
WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as
described in the IEEE 802.11 standard.
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34
Appendix B:
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix B: Using Windows XP Wireless Configuration
If your computer is running Windows XP, then this choice will be available. If you want to use Windows XP
Wireless Configuration to control the Adapter, instead of using the Wireless Network Monitor, then right-click on
the Wireless Network Monitor and select Use Windows XP Wireless Configuration.
If you want to switch back to the Wireless Network Monitor, right-click the Wireless Network Monitor icon, and
select Use Linksys Wireless Network Monitor.
1. After installing the Adapter, the Windows XP Wireless Configuration icon will appear in your computer’s
system tray. Double-click the icon.
Figure B-1: Wireless Network Monitor Icon
Figure B-2: Windows XP - Use Windows XP
Wireless Configuration
NOTE: For more information about Windows XP Wireless Configuration, refer to Windows Help.
Figure B-3: Windows XP Wireless Configuration Icon
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Appendix B:
Compact Wireless-G USB Network Adapter with SpeedBooster
2. The screen that appears will show any available wireless network. Select the network you want. Click the
Connect button.
If your network does not have wireless security enabled, go to step 3.
If your network does have wireless security enabled, go to step 4.
3. If your network does not have wireless security enabled, click the Connect Anyway button to connect the
Adapter to your network.
NOTE: Steps 2 and 3 are the instructions and
screenshots for Windows XP with Service Pack 2
installed.
Figure B-4: Available Wireless Network
Figure B-5: No Wireless Security
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Appendix B:
Compact Wireless-G USB Network Adapter with SpeedBooster
4. If your network uses wireless security WEP, enter the WEP Key used into the Network Key and Confirm
network key fields. If your network uses wireless security WPA Personal, enter the Passphrase used into
the Network Key and Confirm network key fields. Click the Connect button.
5. Your wireless network will appear as Connected when your connection is active.
For more information about wireless networking on a Windows XP computer, click the Start button, select Help,
and choose Support. Enter the keyword wireless in the field provided, and press the Enter key.
The installation of the Windows XP Wireless Configuration is complete.
NOTE: Windows XP Wireless Configuration does not
support the use of a passphrase. Enter the exact WEP
key used by your wireless router or access point.
Figure B-6: Network Connection - Wireless Security
Figure B-7: Wireless Network Connection
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37
Appendix C: Wireless Security
Security Precautions
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix C: Wireless Security
Linksys wants to make wireless networking as safe and easy for you as possible. The current generation of
Linksys products provide several network security features, but they require specific action on your part for
implementation. So, keep the following in mind whenever you are setting up or using your wireless network.
Security Precautions
The following is a complete list of security precautions to take (at least steps 1 through 5 should be followed):
1. Change the default SSID.
2. Disable SSID Broadcast.
3. Change the default password for the Administrator account.
4. Enable MAC Address Filtering.
5. Change the SSID periodically.
6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce
your network performance.
7. Change the WEP encryption keys periodically.
Security Threats Facing Wireless Networks
Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking
products first listen for “beacon messages”. These messages can be easily decrypted and contain much of the
network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:
Change the administrator’s password regularly. With every wireless networking device you use, keep in mind
that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the only
person who can change network settings. If a hacker gets a hold of the administrator’s password, he, too, can
change those settings. So, make it harder for a hacker to get that information. Change the administrator’s
password regularly.
SSID. There are several things to keep in mind about the SSID:
Note: Some of these security features are
available only through the network router or
access point. Refer to the router or access
point’s documentation for more information.
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38
Appendix C: Wireless Security
Security Threats Facing Wireless Networks
Compact Wireless-G USB Network Adapter with SpeedBooster
1. Disable Broadcast
2. Make it unique
3. Change it often
Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be
more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast
the SSID.
Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is “linksys”.)
Hackers know these defaults and can check these against your network. Change your SSID to something unique
and not something related to your company or the networking products you use.
Change your SSID regularly so that any hackers who have gained access to your wireless network will have to
start from the beginning in trying to break in.
MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only
those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with
a random MAC Address.
WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security
concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job
more difficult.
There are several ways that WEP can be maximized:
1. Use the highest level of encryption possible
2. Use “Shared Key” authentication
3. Change your WEP key regularly
WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Four modes
are available: WPA-Personal, WPA2-Personal, WPA-Enterprise, and RADIUS. WPA-Personal gives you a choice
of two encryption methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption
method and incorporates Message Integrity Code (MIC) to provide protection against hackers, and AES
(Advanced Encryption Standard), which utilizes a symmetric 128-Bit block data encryption. WPA-Personal 2
only uses AES encryption, which is stronger than TKIP. WPA-Enterprise offers two encryption methods, TKIP
and AES, with dynamic encryption keys. RADIUS (Remote Authentication Dial-In User Service) utilizes a
RADIUS server for authentication.
Important: Always remember that each
device in your wireless network MUST use
the same encryption method and encryption
key or your wireless network will not function
properly.
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Appendix C: Wireless Security
Security Threats Facing Wireless Networks
Compact Wireless-G USB Network Adapter with SpeedBooster
WPA-Personal. If you do not have a RADIUS server, select the type of algorithm you want to use, TKIP or AES,
and enter a password in the Passphrase field of 8-63 characters.
WPA-Personal 2. Enter a password in the Passphrase field of 8-63 characters.
WPA-Enterprise. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS
server is connected to the Router or other device.) WPA-Enterprise offers two encryption methods, TKIP and
AES, with dynamic encryption keys. Enter the RADIUS server’s IP Address and port number, along with a key
shared between the device and the server. Last, enter a Group Key Renewal period, which instructs the device
how often it should change the encryption keys.
RADIUS. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is
connected to the Router or other device.) First, enter the RADIUS server’s IP Address and port number, along
with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption,
and either generate a WEP key through the Passphrase or enter the WEP key manually.
Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting
sensitive data over your network, encryption should be used.
These security recommendations should help keep your mind at ease while you are enjoying the most flexible
and convenient technology Linksys has to offer.
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40
Appendix D: Windows Help
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix D: Windows Help
All wireless products require Microsoft Windows. Windows is the most used operating system in the world and
comes with many features that help make networking easier. These features can be accessed through Windows
Help and are described in this appendix.
TCP/IP
Before a computer can communicate with the Access Point, TCP/IP must be enabled. TCP/IP is a set of
instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well.
Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides
complete instructions on enabling TCP/IP.
Shared Resources
If you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on
utilizing shared resources.
Network Neighborhood/My Network Places
Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the
version of Windows you're running). Windows Help provides complete instructions on adding PCs to your
network.
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Appendix E: Glossary
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix E: Glossary
This glossary contains some basic networking terms you may come across when using this product. For more
advanced terms, see the complete Linksys glossary at http://www.linksys.com/glossary.
Access Point - A device that allows wireless-equipped computers and other devices to communicate with a
wired network. Also used to expand the range of a wireless network.
Ad-hoc - A group of wireless devices communicating directly with each other (peer-to-peer) without the use of
an access point.
AES (Advanced Encryption Standard) - A security method that uses symmetric 128-bit block data encryption.
Bandwidth - The transmission capacity of a given device or network.
Bit - A binary digit.
Boot - To start a device and cause it to start executing instructions.
Broadband - An always-on, fast Internet connection.
Browser - An application program that provides a way to look at and interact with all the information on the
World Wide Web.
Byte - A unit of data that is usually eight bits long
Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the
Internet.
Daisy Chain - A method used to connect devices in a series, one after the other.
DDNS (Dynamic Domain Name System) - Allows the hosting of a website, FTP server, or e-mail server with a
fixed domain name (e.g., www.xyz.com) and a dynamic IP address.
Default Gateway - A device that forwards Internet traffic from your local area network.
DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows administrators to assign
temporary IP addresses to network computers by "leasing" an IP address to a user for a limited amount of time,
instead of assigning permanent IP addresses.
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Appendix E: Glossary
Compact Wireless-G USB Network Adapter with SpeedBooster
DMZ (Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be "seen" from
the Internet.
DNS (Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP
addresses.
Domain - A specific name for a network of computers.
Download - To receive a file transmitted over a network.
DSL (Digital Subscriber Line) - An always-on broadband connection over traditional phone lines.
Dynamic IP Address - A temporary IP address assigned by a DHCP server.
EAP (Extensible Authentication Protocol) - A general authentication protocol used to control network access.
Many specific authentication methods work within this framework.
Encryption - Encoding data transmitted in a network.
Ethernet - IEEE standard network protocol that specifies how data is placed on and retrieved from a common
transmission medium.
Firewall - A set of related programs located at a network gateway server that protects the resources of a
network from users from other networks.
Firmware - The programming code that runs a networking device.
FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network.
Full Duplex - The ability of a networking device to receive and transmit data simultaneously.
Gateway - A device that interconnects networks with different, incompatible communications protocols.
Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a
time.
HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World
Wide Web.
Infrastructure - A wireless network that is bridged to a wired network via an access point.
IP (Internet Protocol) - A protocol used to send data over a network.
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Appendix E: Glossary
Compact Wireless-G USB Network Adapter with SpeedBooster
IP Address - The address used to identify a computer or device on a network.
IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device.
IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer.
ISP (Internet Service Provider) - A company that provides access to the Internet.
LAN - The computers and networking products that make up your local network.
MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking
device.
Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission.
NAT (Network Address Translation) - NAT technology translates IP addresses of a local area network to a different
IP address for the Internet.
Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or
transmission between users.
Packet - A unit of data sent over a network.
Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically
generating the WEP encryption keys for Linksys products.
Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online.
POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet.
Port - The connection point on a computer or networking device used for plugging in cables or adapters.
Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power.
PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication
(username and password) in addition to data transport.
PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be
tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe.
RADIUS (Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control
network access.
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Appendix E: Glossary
Compact Wireless-G USB Network Adapter with SpeedBooster
RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires.
Roaming - The ability to take a wireless device from one access point's range to another without losing the
connection.
Router - A networking device that connects multiple networks together.
Server - Any computer whose function in a network is to provide user access to files, printing, communications,
and other services.
SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet.
SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol.
SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before
allowing them to enter the network.
SSID (Service Set IDentifier) - Your wireless network's name.
Static IP Address - A fixed address assigned to a computer or device that is connected to a network.
Static Routing - Forwarding data in a network via a fixed path.
Subnet Mask - An address code that determines the size of the network.
Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of
devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an
electrical circuit.
TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement
from the recipient of data sent.
TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a
network.
Telnet - A user command and TCP/IP protocol used for accessing remote PCs.
TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password
capability.
Throughput - The amount of data moved successfully from one node to another in a given time period.
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45
Appendix E: Glossary
Compact Wireless-G USB Network Adapter with SpeedBooster
TKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for
each packet transmitted.
Topology - The physical layout of a network.
TX Rate - Transmission Rate.
Upgrade - To replace existing software or firmware with a newer version.
Upload - To transmit a file over a network.
URL (Uniform Resource Locator) - The address of a file located on the Internet.
VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another
over the Internet.
WAN (Wide Area Network)- The Internet.
WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for
greater security.
WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with
each other wirelessly.
WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol)
encryption, which can be used in conjunction with a RADIUS server.
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Appendix F: Warranty Information
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix F: Warranty Information
LIMITED WARRANTY
Linksys warrants to the original end user purchaser ("You") that, for a period of three years, (the "Warranty
Period") Your Linksys product will be free of defects in materials and workmanship under normal use. Your
exclusive remedy and Linksys's entire liability under this warranty will be for Linksys at its option to repair or
replace the product or refund Your purchase price less any rebates.
If the product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a
Return Authorization Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. When
returning a product, mark the Return Authorization Number clearly on the outside of the package and include a
copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF
PURCHASE. You are responsible for shipping defective products to Linksys. Linksys pays for UPS Ground
shipping from Linksys back to You only. Customers located outside of the United States of America and Canada
are responsible for all shipping and handling charges.
ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE
DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to You. This warranty gives You specific legal rights, and You may also have other rights
which vary by jurisdiction.
TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE
OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED
REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE
THE PRODUCT, EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL
LINKSYS' LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT.
The foregoing limitations will apply even if any warranty or remedy provided under this Section fails of its
essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to You.
Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623 USA.
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Appendix G: Specifications
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix G: Specifications
Model WUSB54GSC
Standards IEEE 802.11g, IEEE 802.11b, USB 1.1 and 2.0
Channels 802.11b / 802.11g
11 Channels (US, Canada)
13 Channels (Europe)
14 Channels (Japan)
LED(s) Link
Protocols 802.11b: CCK (11 Mbps), DQPSK (2 Mbps),
DBPSK (1 Mbps); 802.11g: OFDM
Transmitted Power 802.11g: 13 ± 1 dBm (Typical)
802.11b: 17 ± 1 dBm (Typical)
Receive Sensitivity 11Mbps @ -80dBm (Typical)
54Mbps @ -65dBm (Typical)
Security features WEP and WPA Encryption
WEP key bits 64 Bit and 128 Bit
Dimensions 3.86" x 0.43" x 1.10"
W x H x D 91 mm x 11 mm x 28 mm
Unit Weight 0.05 lb (0.023 kg)
Certifications FCC, Wi-Fi (802.11b/g)
Operating Temp. 0°C to 45°C (32°F to 113°F)
Storage Temp. -20°C to 60°C (-4°F to 140°F)
Operating Humidity 10% to 85% Non-Condensing
Storage Humidity 5% to 90% Non-Condensing
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Appendix H: Regulatory Information
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix H: Regulatory Information
FCC Statement
This product has been tested and complies with the specifications 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
according to 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 is found 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 or devices
• Connect the equipment to an outlet other than the receiver's
• Consult a dealer or an experienced radio/TV technician for assistance
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance 20cm between the radiator and your body.
Safety Notices
Caution: To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord.
Do not use this product near water, for example, in a wet basement or near a swimming pool.
Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.
Industry Canada (Canada)
This device complies with Canadian ICES-003 and RSS210 rules.
Cet appareil est conforme aux normes NMB-003 et RSS210 d'Industry Canada.
Federal Communication Commission Interference 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 of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into 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.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
IMPORTANT NOTE:
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 laptops (notebooks) with side slot configuration.
Linksys declares that WUSB54GSC ( FCC ID: Q87-WUSB54GSC ) is limited in CH1~CH11 for 2.4 GHz by specified firmware
controlled in U.S.A.
IC statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Operation is subject to the following two conditions:
1) This device may not cause interference and
2) This device must accept any interference, including interference that may cause undesired operation of the device.
IMPORTANT NOTE:
IC Radiation Exposure Statement:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific
operating instructions for satisfying RF exposure compliance. To maintain compliance with IC RF exposure compliance requirements,
please avoid direct contact to the transmitting antenna during transmitting.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Règlement d’Industry Canada
Les conditions de fonctionnement sont sujettes à deux conditions:
1) Ce périphérique ne doit pas causer d’interférence et.
2) Ce périphérique doit accepter toute interférence, y compris les interférences pouvant perturber le bon fonctionnement de ce périphérique.
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49
Appendix H: Regulatory Information
Compact Wireless-G USB Network Adapter with SpeedBooster
User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste Electric and Electronic
Equipment (WEEE)
This document contains important information for users with regards to the proper disposal and recycling of Linksys
products. Consumers are required to comply with this notice for all electronic products bearing the following symbol:
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50
Appendix H: Regulatory Information
Compact Wireless-G USB Network Adapter with SpeedBooster
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51
Appendix H: Regulatory Information
Compact Wireless-G USB Network Adapter with SpeedBooster
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52
Appendix H: Regulatory Information
Compact Wireless-G USB Network Adapter with SpeedBooster
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53
Appendix H: Regulatory Information
Dual-Band Wireless Access Point
For more information, visit www.linksys.com.
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54
Appendix I: Contact Information
Compact Wireless-G USB Network Adapter with SpeedBooster
Appendix I: Contact Information
Need to contact Linksys?
Visit us online for information on the latest products and updates
to your existing products at: http://www.linksys.com or
ftp.linksys.com
Can't find information about a product you want to buy
on the web? Do you want to know more about networking
with Linksys products? Give our advice line a call at: 800-546-5797 (LINKSYS)
Or fax your request in to: 949-823-3002
If you experience problems with any Linksys product,
you can call us at: 800-326-7114
Don't wish to call? You can e-mail us at: support@linksys.com
If any Linksys product proves defective during its warranty period,
you can call the Linksys Return Merchandise Authorization
department for obtaining a Return Authorization Number at: 949-823-3000
(Details on Warranty and RMA issues can be found in the Warranty
Information section in this Guide.)