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35

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.

H

ARDWARE

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.

S

OFTWARE

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.

Y

EAR

 2000 W

ARRANTY

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. 

O

BTAINING

 W

ARRANTY

 S

ERVICE

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 

3C16700.book  Page 35  Tuesday, July 13, 1999  9:59 AM

Summary of Contents for Gigabit Switch 8

Page 1: ...OfficeConnect Ethernet Hub 4 4C 8 8C User Guide 3C16704A 3C16703A 3C16700A 3C16701A 3C16700 book Page i Tuesday July 13 1999 9 59 AM...

Page 2: ...ing 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 Jun...

Page 3: ...Connections 14 Spot Checks 14 Problem Solving for the Hub 4 and 4C 15 The OfficeConnect Ethernet Hub 8 and 8C 17 Ethernet Hub 8 and 8C Front 17 Ethernet Hub 8 and 8C Rear 18 Connecting Workstations an...

Page 4: ...rvices 30 World Wide Web Site 30 3Com Knowledgebase Web Services 30 Support from Your Network Supplier 31 Support from 3Com 31 Returning Products for Repair 34 3Com Corporation Limited Warranty 35 Ele...

Page 5: ...guide describes how to use the OfficeConnect hubs The hubs have similar features and so this user guide contains general and specific information When referring to all products this guide uses the ter...

Page 6: ...range of easy to install network adapter cards which provide your workstations with 10BASE T connections 2 An operating system for example Netware or Windows 95 98 with network support configured run...

Page 7: ...You can use T pieces but Y pieces provide optimal clearance of the other ports Two 10BASE 2 50 Ohm terminators end pieces Figure 2 Some of the 10BASE 2 Equipment You May Need 10BASE T If you have addi...

Page 8: ...ting downwards 3 Align the fastening pieces over the slots found on each side of the unit 4 Push the clip down gently to secure it ensuring the fastening pieces snap into the slots on the unit To fit...

Page 9: ...e template at the back of this guide to mark the position of the holes Fix the screws into the wall leaving their heads 3mm 0 12in clear of the wall surface Remove any connections to the hub and locat...

Page 10: ...rk Utilization LEDs Hub 4C only green yellow orange Indicates how much your network is being used 10BASE T Port Status LEDs green yellow green yellow off Indicates the status of each 10BASE T port The...

Page 11: ...only Allows 10Mbps transceivers of different media types to be connected to the hub Connecting a transceiver automatically disables the 10BASE 2 port Uplink Normal switch Affects the operation of por...

Page 12: ...so you can start using your network immediately When you need more ports simply add more OfficeConnect hubs Connecting Transceivers to the AUI Port You can connect a 10Mbps Ethernet transceiver to yo...

Page 13: ...next section When using 10BASE 2 cable it is important that both ends of the segment are properly terminated with 50 Ohm terminators end pieces Only use 50 Ohm 10BASE 2 cables and a Y piece for each...

Page 14: ...sed should be green If they are not check your connections If the 10BASE 2 port is not used and is not terminated and the AUI port is not being used if applicable the LED should be yellow showing that...

Page 15: ...t Status LED will be yellow Examine your connections and remove the loop Each piece of equipment needs only one connection to your OfficeConnect hub Port Status LED yellow for a 10BASE T port It is li...

Page 16: ...switch is set to Normal out Also check that the equipment being connected to the hub is powered on and operating correctly Refer to Figure 6 below to compare the wiring of a straight through and a cro...

Page 17: ...a port Collision LED yellow Flashes each time a collision is detected on the network Collisions are part of normal network operation Network Utilization LEDs Hub 8C only green yellow orange Indicates...

Page 18: ...Connecting Hubs Using 10BASE 2 on page 20 Uplink Normal switch Affects the operation of port 8 For correct usage refer to Connecting Hubs Using 10BASE T on page 21 Eight 10BASE T RJ 45 ports Use 10BAS...

Page 19: ...t the cable push the connector s latch in and remove it If you are using port 8 to connect to a workstation using a straight through TP cable ensure the Uplink Normal switch is set to Normal out The h...

Page 20: ...operly terminated with 50 Ohm terminators end pieces Only use 50 Ohm 10BASE 2 cables and a Y piece for each hub You can use T pieces but Y pieces provide optimum clearance of the other ports Checking...

Page 21: ...Status LEDs for the 10BASE T ports you have used should be green If they are not check your connections If the 10BASE 2 port is not used and is not terminated the LED should be yellow showing that it...

Page 22: ...ort has partitioned due to a loop in your network in which case the corresponding Port Status LED will be yellow Examine your connections and remove the loop Each piece of equipment needs only one con...

Page 23: ...mal switch is set to Normal out Also check that the equipment being connected to the hub is powered on and operating correctly Refer to Figure 9 below to compare the wiring of a straight through and a...

Page 24: ...e than one path Your hub detects this and partitions isolates one of its ports to break the loop A segment is the length of Ethernet cable connected to a port whether this cable is 10BASE T 10BASE 2 o...

Page 25: ...screened cables category 3 or category 5 complies with the Class A requirements Refer to Electromagnetic Compatibility on page 38 for conditions of operation Power Weight OfficeConnect Ethernet Hub 4...

Page 26: ...ds Improving our environmental record on a continual basis End Of Life Statement 3Com processes allow for the recovery reclamation and safe disposal of all end of life electronic components Regulated...

Page 27: ...ible You can only remove power from the unit by disconnecting the power cord from the outlet This unit operates under SELV Safety Extra Low Voltage conditions according to IEC 950 The conditions are o...

Page 28: ...durch Herausziehen des Ger tenetzkabels aus der Netzsteckdose unterbrochen werden Der Betrieb dieses Ger ts erfolgt unter den SELV Bedingungen Sicherheitskleinstspannung gem IEC 950 Diese Bedingungen...

Page 29: ...l appareil hors circuit qu en d branchant son cordon lectrique au niveau de cette prise L appareil fonctionne une tension extr mement basse de s curit qui est conforme la norme CEI 950 Ces conditions...

Page 30: ...latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as...

Page 31: ...configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com Support from 3Com If you are unable to obtain assistance from t...

Page 32: ...61 463 00798 611 2230 0 2 3455 6455 0080 611 261 001 800 611 2000 Europe From anywhere in Europe call 31 0 30 6029900 phone 31 0 30 6029999 fax Europe South Africa and Middle East From the following c...

Page 33: ...0 13 3266 1230 020 0645 98012 2127 Mexico Peru Puerto Rico Venezuela 01 800 CARE 01 800 2273 AT T 800 666 5065 800 666 5065 AT T 800 666 5065 North America 1 800 876 3266 Country Telephone Number Coun...

Page 34: ...America 1 408 326 2927 1 408 326 3355 From the following countries you may call the toll free numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland I...

Page 35: ...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 o...

Page 36: ...ort 3Com com index htm and provide your date of purchase product number and serial number 3Com reserves the right to modify or cancel this telephone support offering at any time without advance notice...

Page 37: ...anties are not allowed to be excluded in their entirety they will be limited to the duration of the applicable written warranty This warranty gives you specific legal rights which may vary depending o...

Page 38: ...by one or more of the following measures Reorient the receiving antenna Relocate the equipment with respect to the receiver Move the equipment away from the receiver Plug the equipment into a differen...

Page 39: ...39 Wall mounting screw hole guide 150 mm 5 9 in 3C16700 book Page 39 Tuesday July 13 1999 9 59 AM...

Page 40: ...Part No DUA 1670 0AAA04 Published June 1999 40 3C16700 book Page 40 Tuesday July 13 1999 9 59 AM...

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