3Com USB Network Interface manual What Is USB?, Applications, When To Use a USB Hub

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3Com USB Network Interface

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Simplified

Networking

Today, many small businesses and an increasing number of home users have more than one PC and several periph- erals such as printers, modems, and scanners. There are enormous benefits to networking such devices, such as sharing these expen- sive peripherals, transferring files of unlimited size between PCs, providing a single dial-up connection for Internet access, and backing up files fast and easy—not to mention enjoying interactive network games.

Despite these benefits, a surprising number of users shy away from networking. Often this is because they are con- cerned with what they perceive to be the complexities of installing and configuring a NIC inside their PC.

The 3Com USB Network Interface presents a simple alternative to installing an internal NIC by providing a

compact adapter that plugs into the USB port at the back of the PC.

What Is USB?

USB (Universal Serial Bus) is a new type of connector fitted to most PCs available today. It offers true plug- and-play setup and hot-swapping capability so devices can be added, removed, or swapped while your PC is up and running.

Applications

Once you install the USB Network Interface, you’re ready to connect to an Ethernet network. For example, to start sharing printers and exchanging files with other PCs in your home or office, you can connect to the 3Com OfficeConnect® Hub TP4. Or for shared high-speed Internet access, connect to a 3Com OfficeConnect LAN Modem. Whichever device you choose, by connecting to a standard Ethernet network,

you can connect USB and non-USB PCs (equipped with conventional NICs) and peripherals on the same network.

Using OfficeConnect® Network Assistant

To make it even easier to set up and maintain a network, you can take advantage of the OfficeConnect Network Assistant CD-ROM—a step- by-step guide to network setup, expansion, and trou- bleshooting. Best of all, the Network Assistant CD-ROM ships FREE with all OfficeConnect Ethernet hubs and networking kits.

When To Use a USB Hub

A USB hub connects mul- tiple USB peripherals, such as a mouse or digital camera, to one PC. It cannot connect PCs together. The 3Com USB Network Interface can be connected to a PC via a self-powered USB hub.

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Specifications

USB Interface

Universal Serial Bus Specification 1.0 compliant

USB type B connector for standard shielded USB cable, maximum length 5 m

Ethernet Interface

ISO 8802/3, IEEE 802.3 com- pliant, RJ-45 connector for UTP or STP cable (Category 3 or 5), maximum length 100 m

Throughput

Up to 6 Mbps (sustained)

MTBF

In excess of 1 million hours (100 years)

Physical Dimensions

25 mm x 55 mm x 68 mm (1 in x 2.2 in x 2.7 in)

Operating Temperature

0 to 50°C

Humidity

10 to 90% noncondensing

Storage Temperature

-40° to 70°C

Storage Humidity

Up to 95% relative humidity

Operating Voltage

5 V (USB standard)

Operating Current

140 mA

Compliance

Safety Agency Certification

UL 1950, EN 60950, CSA 22.2 No. 950

EMC Emissions

ICES-003 Class B, FCC Part 15 Class B, EN 55022 Class B, VCCI Class B (Japan), As/NZS 3548 Class B, CISPR Class B, CNS 13438 Class B

Shielded cables must be used to ensure compliance with the Class B requirements of these standards. The use of unshielded cables complies with Class A requirements.

Compatibility

Ethernet half-duplex mode

Promiscuous mode is not supported.

Package Contents

•USB Network Interface

•USB cable—0.6 m (2 ft)

•Installation diskette

•Installation guide (in English, French, German, Italian, and Spanish)

Ordering Information

3Com USB Network Interface 3C19250

41 844 833 933

3Com UK Ltd.

Edinburgh: 44 131 240 2900

Ireland: 353 1 823 5000

Manchester: 44 161 873 7717

Winnersh: 44 1189 27 8200

To learn more about 3Com products and services, visit our World Wide Web site at www.3com.com. 3Com is a publicly traded corporation (Nasdaq:COMS).

Copyright © 1998 3Com Corporation. All rights reserved. 3Com, the 3Com logo, and OfficeConnect are registered trademarks of 3Com Corporation. More connected. is a trademark of 3Com Corporation. Windows 98 is a trademark of Microsoft. Other product and brand names may be trademarks or registered trademarks of their respective owners. All specifications are subject to change without notice.

Printed in U.S.A. on recycled paper 400431-001 12/98