3Com Explore the Lifetime Warranty for Model 3C16704A Switch by

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3Com Corporation Limited Warranty

3Com OfficeConnect Ethernet Hub 4, 4C, 8, 8C

The duration of the warranty for the OfficeConnect Ethernet Hub 4, 4C, 8, 8C (3C16704A, 3C16703A, 3C16700A, 3C16701A) is lifetime, including the power adapter.

Advance hardware exchange is available during the first year from your date of purchase in accordance with 3Com’s standard terms and conditions for such service. After the first year the warranty reverts to 3Com’s standard lifetime limited warranty.

To qualify for the lifetime limited warranty and the advance hardware exchange you must submit the appropriate product warranty registration card to 3Com, otherwise this product will be warranted for a period of one (1) year without advance hardware exchange.

HARDWARE

3Com warrants this hardware product to be free from defects in workmanship and materials, under normal use and service, for the following length of time from the date of purchase from 3Com or its authorized reseller:

One (1) year (unless otherwise specified above)

3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the defective product or part, deliver to Customer an equivalent product or part to replace the defective item, or if neither of the two foregoing options is reasonably available, 3Com may, in its sole discretion, refund to Customer the purchase price paid for the defective product. All products that are replaced will become the property of 3Com. Replacement products may be new or reconditioned. 3Com warrants any replaced or repaired product or part for ninety (90) days from shipment, or the remainder of the initial warranty period, whichever is longer.

SOFTWARE

3Com warrants that each software program licensed from it will perform in substantial conformance to its program specifications, for a period of ninety (90) days from the date of purchase from 3Com or its authorized reseller. 3Com warrants the media containing software against failure during the warranty period. No updates are provided. 3Com's sole obligation under this express warranty shall be, at 3Com's option and expense, to refund the purchase price paid by Customer for any defective software product, or to replace any defective

media with software which substantially conforms to applicable 3Com published specifications. Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials. 3Com makes no warranty or representation that its software products will meet Customer’s requirements or work in combination with any hardware or applications software products provided by third parties, that the operation of the software products will be uninterrupted or error free, or that all defects in the software products will be corrected. For any third party products listed in the 3Com software product documentation or specifications as being compatible, 3Com will make reasonable efforts to provide compatibility, except where the non-compatibility is caused by a "bug" or defect in the third party's product or from use of the software product not in accordance with 3Com’s published specifications or user manual.

YEAR 2000 WARRANTY

In addition to the Hardware Warranty and Software Warranty stated above, 3Com warrants that each product sold or licensed to Customer on and after January 1, 1998 that is date sensitive will continue performing properly with regard to such date data on and after January 1, 2000, provided that all other products used by Customer in connection or combination with the 3Com product, including hardware, software, and firmware, accurately exchange date data with the 3Com product, with the exception of those products identified at 3Com’s Web site, http://www.3com.com/products/yr2000.html, as not meeting this standard. If it appears that any product that is stated to meet this standard does not perform properly with regard to such date data on and after January 1, 2000, and Customer notifies 3Com before the later of April 1, 2000, or ninety

(90)days after purchase of the product from 3Com or its authorized reseller, 3Com shall, at its option and expense, provide a software update which would effect the proper performance of such product, repair such product, deliver to Customer an equivalent product to replace such product, or if none of the foregoing is feasible, refund to Customer the purchase price paid for such product.

Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety (90) days after purchase or until April 1, 2000, whichever is later.

OBTAINING WARRANTY SERVICE

Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the applicable warranty period to obtain warranty service authorization. Dated proof of purchase from 3Com or its authorized reseller may be required. Products returned to 3Com's Corporate Service Center must be

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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 Transceiver Connections Creating Your NetworkWhat Else Do I Need? Workstation ConnectionsTwisted Pair TP Cables Hub Connections10BASE-2 Stacking Clip Stacking the Units TogetherRubber Feet Securing Your Hub Using Your HubPositioning Your Hub AUI/COAX Status LEDs Hub 4C only Officeconnect Ethernet HUB 4 and 4CEthernet Hub 4 and 4C-Front Network Utilization LEDs Hub 4C only10BASE-2 port Hub 4C only Ethernet Hub 4 and 4C-RearConnecting Transceivers to the AUI Port Connecting Workstations and Other Equipment to Your HubConnecting OfficeConnect Ethernet Hubs Together Checking Connections Connecting Hubs Using 10BASE-2Spot Checks Connecting Hubs Using 10BASE-TProblem Solving for the HUB 4 and 4C Straight-through Cable/Crossover Cable Port Status LEDs Power LED Collision LEDOfficeconnect Ethernet HUB 8 and 8C Ethernet Hub 8 and 8C-Front10BASE-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 Standards Dimensions and StandardsDimensions and Operating Conditions Power WeightEnvironmental Statement about the Documentation Environmental StatementsEnd Of Life Statement Regulated Materials StatementImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité World Wide Web Site Online Technical Services3Com Knowledgebase Web Services Technical SupportSupport from 3Com Support from Your Network SupplierEurope, South Africa, and Middle East Country Telephone Number Asia, Pacific RimEurope North America Country Telephone Number Latin AmericaCountry Telephone Number Fax Number Returning Products for Repair3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Wall mounting screw hole guide 150 mm 5.9 Part No. DUA 1670-0AAA04 Published June