Cisco Linksys WU54GP Manuel utilisateur

A Division of Cisco Systems, Inc.

Model No.

Portable USB Adapter

Wireless-G

WUSB54GP v4 Linksys is a registered trademark ortrademark of Cisco Systems, Inc.

and/orits affiliates in the U.S. and certain other countries.

User Guide

WIRELESS

GHz

2.4

802.11g

Wireless-G Portable USB Adapter

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco

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 Wireless-G Portable 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 Wireless-G Portable USB Adapter.

This checkmark means there is a Note of interest and

is something you should pay special attention to

while using the Wireless-G Portable USB Adapter.

This question mark provides you with a reminder

about something you might need to do while using

the Wireless-G Portable USB Adapter.

word: definition.

Figure 0-1: Sample Figure Description

Wireless-G Portable USB 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 5

Chapter 3: Software Installation and Configuration for Windows 2000 6

Chapter 4: Connecting the Portable USB Adapter 10

Using the USB Extension Base 11

Chapter 5: Driver Installation for Windows XP 12

Windows XP Wireless Zero Configuration 13

Chapter 6: Using the WLAN Monitor 15

Overview 15

Accessing the WLAN Monitor 15

The Link Information Tab 15

The Site Survey Tab 17

The Profiles Tab 18

Creating a New Profile 20

Appendix A: Troubleshooting 24

Common Problems and Solutions 24

Frequently Asked Questions 25

Security Precautions 28

Security Threats Facing Wireless Networks 28

Appendix B: Wireless Security 28

Appendix C: Windows Help 31

Appendix D: Glossary 32

Appendix E: Specifications 35

Appendix F: Warranty Information 37

Appendix G: Regulatory Information 38

Appendix H: Contact Information 39

Wireless-G Portable USB Adapter

Appendix I: Windows Help 31

Appendix J: Glossary 32

Appendix K: Specifications 35

Appendix L: Warranty Information 37

Appendix M: Regulatory Information 38

Appendix N: Contact Information 39

Wireless-G Portable USB Adapter

List of Figures

Figure 3-1: The Setup Wizard’s Welcome Screen 6

Figure 3-2: The License Agreement Screen 7

Figure 3-3: The Wireless Mode Screen 7

Figure 3-4: The Ad-Hoc Mode Settings Screen 8

Figure 3-5: The Wireless Security Screen 8

Figure 3-6: The Check Settings Screen 9

Figure 3-7: The Congratulations Screen 9

Figure 4-1: The Portable USB Adapter on Your Laptop 10

Figure 4-2: A USB Port 10

Figure 4-3: The Windows 2000 Digital Signature Screen 11

Figure 5-1: XP Setup Welcome Screen 12

Figure 5-2: Windows logo testing screen 12

Figure 5-3: New Hardware Found screen 12

Figure 5-4: Windows XP Wireless Zero Configuration icon 13

Figure 5-5: Network Connection - No WEP 13

Figure 5-6: Network Connection - WEP 14

Figure 5-7: Optional Settings 14

Figure 6-1: The Wireless Icon 15

Figure 6-2: The Link Information Tab 15

Figure 6-3: The Link Information Tab - More Information 16

Figure 6-4: The Site Survey Tab 17

Figure 6-5: The Profiles Tab 18

Figure 6-6: Importing a Profile 19

Figure 6-7: Optional Settings 19

Figure 6-8: The Profiles Tab 20

Figure 6-9: Create Connection Profile 20

Figure 6-10: Profiles - Network Settings 21

Figure 6-11: Profiles - Wireless Mode 21

Figure 6-12: Profiles - Ad-Hoc Settings 22

Figure 6-13: Profiles - Security Settings 22

Wireless-G Portable USB Adapter

Figure 6-14: Profiles - Confirm New Settings 23

Figure 6-15: Profiles - Congratulations 23

Chapter 1: Introduction

Welcome

Wireless-G Portable USB Adapter

Chapter 1: Introduction

Welcome

Thank you for choosing the Wireless-G Portable USB Adapter. 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 ofthe 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.

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.

Chapter 1: Introduction

What’s in this Guide?

Wireless-G Portable USB Adapter

What’s in this Guide?

This user guide covers the steps for setting up and using the Wireless-B 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: Software Installation and Configration for Windows 2000

This chapter instructs you on how to install the Adapter’s Setup Wizard and Configure the Adapter for

Windows 2000.

• Chapter 4: Connecting the Portable USB Adapter

This chapter shows you how to connect the Adapter to your PC’s USB port.

• Chapter 5: Driver Installation and Configuration for Windows XP

This chapter explains how to install the Adapter’s driver and use Windows Zero Configuration.

• Chapter 6: Using the WLAN Monitor

This chapter show you how to use the Adapter’s WLAN 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: 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.

Chapter 1: Introduction

What’s in this Guide?

Wireless-G Portable USB Adapter

• Appendix F: Warranty Information

This appendix supplies the Adapter’s warranty information.

• 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.

Chapter 2: Planning your Wireless Network

Network Topology

Wireless-G Portable USB 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

infrastructurenetwork cantalk to any computer in a wired networkinfrastructure 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

effectivewireless transmission rangefor two wirelessadapter PCs. Since anaccess point is able to forwarddata

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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