Cisco Linksys WUSB54G User manual

A Division of Cisco Systems, Inc.
®
Model No.
USB Network Adapter
Wireless-G
WUSB54G
User Guide
WIRELESS
GHz
2.4
802.11g

Wireless-G USB Network Adapter
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 © 2004 Cisco Systems, Inc. All
rights reserved. Other brands and product names are trademarks or registered trademarks of their respective
holders.
This User Guide
The User Guide to the Wireless-G USB Network Adapter has been designed to make understanding networking
easier than ever. Look for the following items when reading this 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 Adapter.
word: definition.
This checkmark means there is a note of interest and
is something you should pay special attention to while
using the Adapter.
This question mark provides you with a reminder about
something you might need to do while using the Adapter.
Figure 0-1: Sample Figure Description
WUSB54G_V2-UG-40422NC JL

Wireless-G USB Network Adapter
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 4
Chapter 3: Getting to Know the Wireless-G USB Network Adapter 6
The USB Port 6
The LED Indicators 6
Chapter 4: Setting up the Wireless-G USB Network Adapter 7
Using the Setup Wizard 7
Chapter 5: Connecting the Wireless-G USB Network Adapter 14
Connecting the Adapter 14
Using the Adapter’s Wall Mount 15
Chapter 6: Using the Wireless Network Monitor 16
Using the Wireless Network Monitor Icon 16
Accessing the Wireless Network Monitor 17
Link Information 17
Site Survey 20
Profiles 21
Creating a New Profile 22
Appendix A: Troubleshooting 29
Common Problems and Solutions 29
Frequently Asked Questions 30
Appendix B: Wireless Security 33
Security Precautions 33
Security Threats Facing Wireless Networks 33
Appendix C: Windows Help 36
Appendix D: Glossary 37
Appendix E: Specifications 44

Wireless-G USB Network Adapter
Appendix F: Warranty Information 46
Appendix G: Regulatory Information 47
Appendix H: Contact Information 49

Wireless-G USB Network Adapter
List of Figures
Figure 3-1: USB Port 6
Figure 3-2: Front Panel 6
Figure 4-1: Setup Wizard’s Welcome Screen 7
Figure 4-2: Setup Wizard’s License Agreement 7
Figure 4-3: Setup Wizard’s Wireless Mode Screen 8
Figure 4-4: Setup Wizard’s Ad-Hoc Mode Settings Screen 8
Figure 4-5: Setup Wizard’s Wireless Security Screen 9
Figure 4-6: Setup Wizard’s Wireless Security - WEP Screen 9
Figure 4-7: Setup Wizard’s Wireless Security - PSK Using TKIP Screen 10
Figure 4-8: Setup Wizard’s Wireless Security - PSK Using AES Screen 10
Figure 4-9: Setup Wizard’s Wireless Security - PSK + RADIUS Using EAP-TLS Screen 11
Figure 4-10: Setup Wizard’s Wireless Security - PSK + RADIUS Using EAP-PEAP Screen 11
Figure 4-11: Setup Wizard’s Wireless Security - RADIUS Using EAP-TLS Screen 12
Figure 4-12: Setup Wizard’s Wireless Security - RADIUS Using EAP-PEAP Screen 12
Figure 4-13: Setup Wizard’s Check Settings Screen 13
Figure 4-14: Digital Signature Not Found Screen 13
Figure 4-15: Setup Wizard’s Congratulations Screen 13
Figure 5-1: How the Adapter Connects to Your PC 14
Figure 5-2: Adapter’s USB Port 14
Figure 5-3: PC’s USB Ports 14
Figure 5-4: Digital Signature Not Found Screen 14
Figure 5-5: Using the Wall Mount - Step A 15
Figure 5-6: Using the Wall Mount - Step B 15
Figure 5-7: Using the Wall Mount - Step C 15
Figure 6-1: Wireless Network Monitor Icon 16
Figure 6-2: Windows XP - Use Windows XP Wireless Configuration 16
Figure 6-3: Windows XP - Use Linksys Wireless Network Monitor 16
Figure 6-4: Link Information 17
Figure 6-5: More Information - Wireless Network Status 18
Figure 6-6: More Information-Network Statistics 19

Wireless-G USB Network Adapter
Figure 6-7: Site Survey 20
Figure 6-8: WEP Key Needed for Connection 20
Figure 6-9: PSK (Pre-Shared Key) Needed for Connection 20
Figure 6-10: Profiles 21
Figure 6-11: Import a Profile 21
Figure 6-12: Export a Profile 21
Figure 6-13: Create a New Profile 22
Figure 6-14: Enter Profile Name 22
Figure 6-15: Network Settings for New Profile 22
Figure 6-16: Wireless Mode for New Profile 23
Figure 6-17: Ad-Hoc Mode Settings for New Profile 23
Figure 6-18: Wireless Security for New Profile 24
Figure 6-19: Wireless Security - WEP for New Profile 24
Figure 6-20: Wireless Security - PSK for New Profile 25
Figure 6-21: Wireless Security - PSK + RADIUS Using EAP-TLS for New Profile 26
Figure 6-22: Wireless Security - PSK + RADIUS Using EAP-PEAP for New Profile 26
Figure 6-23: Wireless Security - RADIUS Using EAP-TLS for New Profile 27
Figure 6-24: Wireless Security - RADIUS Using EAP-PEAP for New Profile 27
Figure 6-25: Confirm New Settings for New Profile 28
Figure 6-26: Congratulations for New Profile 28

1
Chapter 1: Introduction
Welcome
Wireless-G USB Network Adapter
Chapter 1: Introduction
Welcome
Thank you for choosing the Wireless-G USB Network Adapter. With this Adapter, your wireless networking
experience will be faster and easier than ever.
Connect your USB-equipped desktop or notebook computer to a wireless network at incredible speeds with the
Linksys Wireless-G USB Network Adapter. By incorporating two fast technologies—USB 2.0 and Wireless-G
(802.11g)—the Adapter delivers data rates up to 54Mbps (5 times as fast as 802.11b), without the trouble of
opening up the case of your desktop computer.
To install, simply plug the Adapter into any available USB port. (It's compatible with both USB 1.1 and 2.0 ports,
but 2.0 will yield the fastest speeds.) It gets its power through the USB connection, so no power cord is
necessary. The included Setup Wizard walks you through configuring the Adapter to your wireless network
settings, step by step. The Wireless-G USB Network Adapter is also compatible with the Wireless-B (802.11b)
network standard, with data rates up to 11Mbps. And your wireless communications can be protected by 128-bit
encryption, so your data stays safe.
The Wireless-G USB Network Adapter's high-gain antenna lets you put your computer almost anywhere in the
building, without the cost and hassle of running cables. Now you don't have to drill holes in your walls and climb
through the attic or cellar to get connected to the network. Once you're connected, you can keep in touch with
your e-mail, access the Internet, use instant messaging to chat with friends, and share files and other resources
such as printers and hard disk storage space with other computers on the network.
Use the instructions in this Guide to help you install and use the Wireless-G USB Network Adapter. These
instructions should be all you need to get the most out of the Adapter.
802.11b: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
11Mbps and an operating frequency of 2.4GHz.
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.
802.11g: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
54Mbps and an operating frequency of 2.4GHz.

2
Chapter 1: Introduction
What’s in this Guide?
Wireless-G USB Network Adapter
What’s in this Guide?
This user guide covers the steps for setting up and using the 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 Wireless-G USB Network Adapter
This chapter describes the physical features of the Adapter.
• Chapter 4: Setting up the Wireless-G USB Network Adapter
This chapter instructs you on how to run the Adapter’s Setup Wizard and configure the Adapter.
• Chapter 5: Connecting the Wireless-G USB Network Adapter
This chapter shows you how to connect the Adapter to your PC.
• Chapter 6: Using the Wireless Network Monitor
This chapter explains how to use the Adapter’s Wireless Network Monitor.
• Appendix A: Troubleshooting
This appendix describes some potential problems and solutions, as well as frequently asked questions,
regarding installation and use of the Adapter.
• Appendix B: Wireless Security
This appendix discusses security issues regarding wireless networking and measures you can take to help
protect your wireless network.
• Appendix C: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as installing
the TCP/IP protocol.
• Appendix D: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
• Appendix E: Specifications
This appendix provides the Adapter’s technical specifications.
• Appendix F: Warranty Information
This appendix supplies the Adapter’s warranty information.

3
Chapter 1: Introduction
What’s in this Guide?
Wireless-G USB Network Adapter
• Appendix G: Regulatory Information
This appendix supplies the Adapter’s regulatory information.
• Appendix H: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.

4
Chapter 2: Planning Your Wireless Network
Network Topology
Wireless-G USB Network Adapter
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
infrastructurenetworkcantalk to any computer in a wirednetworkinfrastructureviatheaccesspoint orwireless
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, provided that they
both share the same channel and SSID.
Choose a feasible radio channel and optimum access point position. Proper access point positioning combined
with a clear radio signal will greatly enhance performance.
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 as the PC
Adapters for your laptop computers, PCI Adapters for your desktop PCs, and USB Adapters for when you want to
enjoy USB connectivity. Wireless products will also communicate with the Wireless PrintServer.
infrastructure: a wireless network that is
bridged to a wired network via an access point.
ad-hoc: a group of wireless devices
communicating directly with each other (peer-
to-peer) without the use of 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.
topology: the physical layout of a network.

5
Chapter 2: Planning Your Wireless Network
Network Layout
Wireless-G USB Network Adapter
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.

6
Chapter 3: Getting to Know the Wireless-G USB Network Adapter
The USB Port
Wireless-G USB Network Adapter
Chapter 3: Getting to Know the Wireless-G USB Network
Adapter
The USB Port
The Adapter’s USB port is located on the side of the Adapter. You will connect the included USB cable to this port
and your PC’s USB port. All power is provided through the USB connection, so a power adapter is not needed.
The LED Indicators
The Adapter's LEDs indicate the status of the Adapter’s power and wireless connection.
Power Green. The Power LED lights up when the Adapter is adequately powered by the USB connection.
Link Green. The Link LED lights up when theAdapter hasan active wirelessconnection. Itwillflash when
data is transmitted.
Figure 3-1: USB Port
Figure 3-2: Front Panel

7
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
Chapter 4: Setting up the Wireless-G USB Network Adapter
The Wireless-G USB Network Adapter Setup Wizard will guide you through the installation procedure. The Setup
Wizard will install the driver and Wireless Network Monitor, as well as configure the Adapter.
Using the Setup Wizard
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:
Install - Click the Install button to begin the software installation process.
User Guide - Click the User Guide button to open the PDF file of this User Guide.
Exit - Click the Exit button to exit the Setup Wizard.
1. To install the Adapter, click the Install button on the Welcome screen.
2. After reading the License Agreement, click the Next button if you agree, or click the Cancel button to end the
installation.
Figure 4-1: Setup Wizard’s Welcome Screen
Figure 4-2: Setup Wizard’s License Agreement
NOTE: You must run the Setup Wizard before connecting the Adapter
to your computer.

8
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
3. The Setup Wizard will ask you to choose a network mode. Click the Infrastructure Mode radio button if you
want your wireless computers to network with computers on your wired network using a wireless access
point. Click the Ad-Hoc Mode radio button if you want multiple wireless computers to network directly with
each other.
In the SSID field, enter the SSID of your wireless network. The SSID must be identical for all devices in the
network. The default setting is linksys (all lowercase). Click the Next button.
4. Ifyou chose Infrastructure Mode, go to Step 5 now. If you chose Ad-Hoc Mode, select the correct operating
channel for your network. Then, select the Network Mode from the drop-down menu. Click the Next button,
and go to Step 5. Click the Back button to change any settings.
Channel - 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, select the default channel (Channel 6).
Network Mode - Select Mixed Mode if you want to allow Wireless-G and Wireless-B computers on the
network, even though network speeds will be reduced. For maximum speed, select G-Only Mode; however,
no Wireless-B users will be allowed on the network.
Figure 4-3: Setup Wizard’s Wireless Mode Screen
NOTE: Network SSIDs should be unique to your network and identical for all
devices within the network.
Figure 4-4: Setup Wizard’s Ad-Hoc Mode Settings Screen

9
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
5. Select the method of security you want to use: WEP, PSK, PSK + RADIUS, or RADIUS. WEP stands for Wired
Equivalent Privacy, and PSK stands for Pre-Shared Key. RADIUS stands for Remote Authentication Dial-In User
Service.
If you don’t want to use encryption, select Disabled and then click the Next button to continue. Proceed to
Step 7.
Click the Next button to continue or the Back button to return to the previous screen.
6. Proceed to the appropriate section for your security method: WEP, PSK, PSK-RADIUS, or RADIUS.
WEP
WEP - Select 64-bit or 128-bit encryption from the drop-down menu, and enter a passphrase or WEP key.
Passphrase - Enter a passphrase in the Passphrase field, so a WEP key is automatically generated. It is case-
sensitive and should not be longer than 16 alphanumeric characters. This 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.)
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”.
Advanced Users
TX Key -The default transmit key number is 1. Ifyour network’saccess 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, so it will auto-detect for Shared Key or Open System
authentication. For Shared Key authentication, both the sender and the recipient share a WEP key for
authentication. For Open System authentication, the sender and the recipient do not share a WEP key for
authentication. If you are not sure which authentication method to select, keep the default, Auto.
Click the Next button to continue. Click the Back button to return to the previous screen.
Figure 4-5: Setup Wizard’s Wireless Security Screen
Figure 4-6: Setup Wizard’s Wireless Security -
WEP Screen
NOTE: If your network is using WPA-Personal or WPA-PSK security, then
select PSK. If your network is using WPA-Enterprise or WPA-RADIUS security,
then select PSK + RADIUS.

10
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
PSK
PSK offers two encryption methods, TKIP and AES, with dynamic encryption keys. Select the type of
algorithm, TKIP or AES,for the Encryption Type. Then enter a Passphrase that is 8-63 characters in length.
Encryption - Select the type of algorithm you want to use, TKIP or AES,for the Encryption Type.
Passphrase - Enter a Passphrase, also called a Pre-Shared Key, of 8-63 characters in the Passphrase field.
The longer and more complex your Passphrase is, the more secure your network will be.
Click the Next button to continue. Click the Back button to return to the previous screen.
Figure 4-7: Setup Wizard’s Wireless Security -
PSK Using TKIP Screen
Figure 4-8: Setup Wizard’s Wireless Security -
PSK Using AES Screen

11
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
PSK + RADIUS
PSK + RADIUS features a Pre-Shared Key used in coordination with a RADIUS server. (This should only be
used when a RADIUS server is connected to the Router.) PSK + RADIUS offers two encryption methods, TKIP
and AES, with dynamic encryption keys, as well as two authentication methods, EAP-TLS and EAP-PEAP.
Authentication - Select the authentication method your network is using, EAP-TLS or EAP-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. 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. Click the Back button to return to the previous screen.
EAP-PEAP
If you selected EAP-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. 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. Click the Back button to return to the previous screen.
Figure 4-9: Setup Wizard’s Wireless Security -
PSK + RADIUS Using EAP-TLS Screen
Figure 4-10: Setup Wizard’s Wireless Security -
PSK + RADIUS Using EAP-PEAP Screen

12
Chapter 4: Setting up the Wireless-G USB Network Adapter
Using the Setup Wizard
Wireless-G USB Network Adapter
RADIUS
RADIUS features use of a RADIUS server. (This should only be used when a RADIUS server is connected to the
Router.) RADIUS offers two authentication types: EAP-TLS and EAP-PEAP.
Authentication - Select the authentication method your network is using, EAP-TLS or EAP-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. From the Certificate drop-down menu, select the
certificate you have installed to authenticate you on your wireless network.
Click the Next button to continue. Click the Back button to return to the previous screen.
EAP-PEAP
If you selected EAP-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. From the Certificate drop-down menu, select the certificate you have installed to
authenticate you on your wireless network.
Click the Next button to continue. Click the Back button to return to the previous screen.
Figure 4-11: Setup Wizard’s Wireless Security -
RADIUS Using EAP-TLS Screen
Figure 4-12: Setup Wizard’s Wireless Security -
RADIUS Using EAP-PEAP Screen