Cisco Linksys WUSB54G Manuale utente

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

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.

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

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.

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.

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.

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.

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