3Com 8 manual 3Com Corporation 5400 Bayfront Plaza Santa Clara, California

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3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 1999, 3Com Technologies. All rights reserved.

No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Technologies.

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If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, the 3Com logo and OfficeConnect are registered trademarks of 3Com Corporation.

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All other company and product names may be trademarks of the respective companies with which they are associated.

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Environmental Statement: Please recycle this user guide after use.

Please e-mail any comments about this document to 3Com at: pddtechpubs_comments@3Com.com. Please include the document title (OfficeConnect Ethernet Hub 4, Hub 4C, Hub 8, Hub 8C), part number (DUA1670-0AAA04) and, if appropriate, the page number.

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Contents OfficeConnect Ethernet Hub 4, 4C, 8, 8C 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Important Safety Information Wichtige Sicherheitshinweise Consignes importantes de sécurité Technical Support Introduction Workstation Connections Creating Your NetworkWhat Else Do I Need? Transceiver ConnectionsTwisted Pair TP Cables Hub Connections10BASE-2 Stacking Clip Stacking the Units TogetherRubber Feet Securing Your Hub Using Your HubPositioning Your Hub Network Utilization LEDs Hub 4C only Officeconnect Ethernet HUB 4 and 4CEthernet Hub 4 and 4C-Front AUI/COAX Status LEDs Hub 4C onlyEthernet Hub 4 and 4C-Rear 10BASE-2 port Hub 4C onlyConnecting Transceivers to the AUI Port Connecting Workstations and Other Equipment to Your HubConnecting OfficeConnect Ethernet Hubs Together Connecting Hubs Using 10BASE-2 Checking ConnectionsConnecting Hubs Using 10BASE-T Spot ChecksProblem Solving for the HUB 4 and 4C Straight-through Cable/Crossover Cable Ethernet Hub 8 and 8C-Front Power LED Collision LEDOfficeconnect Ethernet HUB 8 and 8C Port Status LEDs10BASE-2 port Hub 8C only Power Adapter socket Uplink/Normal switchEthernet Hub 8 and 8C-Rear Connecting Workstations and Other Equipment to Your Hub 50 Ohm Terminator Switch set to Normal out Uplink Problem Solving for the HUB 8 and 8C Normal Pin Uplink Port Rx+ Tx+ Networking Terminology Power Weight Dimensions and StandardsDimensions and Operating Conditions StandardsRegulated Materials Statement Environmental StatementsEnd Of Life Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité Technical Support Online Technical Services3Com Knowledgebase Web Services World Wide Web SiteSupport from Your Network Supplier Support from 3ComEurope, South Africa, and Middle East Country Telephone Number Asia, Pacific RimEurope Country Telephone Number Latin America North AmericaReturning Products for Repair Country Telephone Number Fax Number3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Wall mounting screw hole guide 150 mm 5.9 Part No. DUA 1670-0AAA04 Published June