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marked on the outside of the package, and sent prepaid and packaged 
appropriately for safe shipment, and it is recommended that they be insured or sent 
by a method that provides for tracking of the package.  The repaired or replaced 
item will be shipped to Customer, at 3Com's expense, not later than thirty (30) days 
after 3Com receives the defective product.

Dead- or Defective-on-Arrival.  In the event a product completely fails to function 
or exhibits a defect in materials or workmanship within the first forty-eight (48) 
hours of installation but no later than thirty (30) days after the date of purchase, 
and this is verified by 3Com, it will be considered dead- or defective-on-arrival 
(DOA) and a replacement shall be provided by advance replacement.  The 
replacement product will normally be shipped not later than three (3) business 
days after 3Com’s verification of the DOA product, but may be delayed due to 
export or import procedures.  When an advance replacement is provided and 
Customer fails to return the original product to 3Com within fifteen (15) days 
after shipment of the replacement, 3Com will charge Customer for the 
replacement product, at list price.

3Com shall not be responsible for any software, firmware, information, or memory 
data of Customer contained in, stored on, or integrated with any products returned 
to 3Com for repair, whether under warranty or not.

ADDITIONAL SERVICES:
Telephone Support. This OfficeConnect® product comes with telephone technical 
support for ninety (90) days.  The ninety (90) day period begins on the date of 
Customer's product purchase. 

The telephone technical support is available from 3Com from 9 a.m. to 5 p.m., 
local time, Monday through Friday, excluding local holidays.  Telephone technical 
support is limited to the 3Com products designated above and may include 
assistance with installation, product specific configuration, and identification of 
equipment problems.  Please refer to the Technical Support appendix in the User 
Guide for telephone numbers.

Response to requests for telephone technical support will be in the form of a 
return call from a 3Com representative by close of business the following business 
day. 

To qualify for this 90 days of telephone technical support, you must register on 
the 3Com Web site at http://support.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.  This offer is not available where prohibited or restricted by law.

3Com’s Web and Bulletin Board Service are available at no charge, and provide 
software and firmware upgrades, a bug list, and technical information about 
3Com products.

W

ARRANTIES

 E

XCLUSIVE

IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, 
CUSTOMER'S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE 
REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S 
OPTION.  TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING 
WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER 
WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT 
OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING 
WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A 
PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH 
DESCRIPTION, AND NON-INFRINGEMENT, ALL OF WHICH ARE EXPRESSLY 
DISCLAIMED.  3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON 
TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, 
INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS.

3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND 
EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT OR MALFUNCTION IN THE 
PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER'S OR ANY THIRD 
PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, 
UNAUTHORIZED ATTEMPTS TO OPEN, REPAIR OR MODIFY THE PRODUCT, OR 
ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY 
ACCIDENT, FIRE, LIGHTNING, OTHER HAZARDS, OR ACTS OF GOD.

L

IMITATION

 

OF

 L

IABILITY

TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF 
AND ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT 
(INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, 
SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR 
PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER 
FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, 
INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION 
OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN 
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO 
REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S 
OPTION.  THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED 
IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.

3C16751_booklet.book  Page 28  Tuesday, July 13, 1999  11:29 AM

Summary of Contents for 3C16751A

Page 1: ...OfficeConnect Dual Speed Hub 16 User Guide 3C16751A 3C16751_booklet book Page i Tuesday July 13 1999 11 29 AM...

Page 2: ...ng 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...

Page 3: ...cks 13 Problem Solving 14 Networking Terminology 16 Dimensions and Standards 17 Dimensions and Operating Conditions 17 Standards 17 Environmental Statements 18 End Of Life Statement 18 Regulated Mater...

Page 4: ...4 3C16751_booklet book Page 4 Tuesday July 13 1999 11 29 AM...

Page 5: ...xteen 10 100BASE TX ports It allows you to set up a network with both Ethernet 10Mbps and Fast Ethernet 100Mbps workstations and other devices a Class II hub can be connected to another Fast Ethernet...

Page 6: ...ision LEDs yellow Flash each time a collision is detected on the Hub s 100Mbps or 10Mbps segment Collisions are a normal part of network operation Network Utilization LEDs green yellow orange top row...

Page 7: ...to any workstation or other equipment that has a 10BASE T or 100BASE TX port Each port is capable of autosensing for 10Mbps or 100Mbps operation 10 100BASE TX 16 8X 1X 9X Uplink Normal switch Affects...

Page 8: ...dard ports designed for workstation connections have been marked with the graphical symbol x This denotes a crossover in the port s internal wiring for example 1x 2x 3x Twisted Pair TP Cables To conne...

Page 9: ...nting 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 10: ...nting the unit ensure that it is within reach of the power outlet You need two suitable screws Ensure that the wall you are going to use is smooth flat dry and sturdy Make two screw holes which are 14...

Page 11: ...s fully in its latch locks it in place To disconnect the cable push the connector s latch in and remove it The Hub detects all port connections so you can start using your network immediately If you n...

Page 12: ...et 10Mbps hubs in series between workstations or between a workstation and a non repeater piece of equipment such as a switch Each cable must not exceed 100m 328ft An example is shown in Figure 4 Figu...

Page 13: ...nt to the Hub power on the Hub For each port with a connection a Port Status LED should be on If the port is operating at 100Mbps the corresponding LED in the upper row of Port Status LEDs is on If th...

Page 14: ...due to a problem with the network card NIC of the attached equipment Alert LED continuously lit There is a problem with the network Check the Port Status LEDs to try to identify the port that is causi...

Page 15: ...t has a connection Check that you are using a straight through cable which is properly connected at both ends and is not damaged Refer to Twisted Pair TP Cables on page 8 Also check that the equipment...

Page 16: ...han one path Your hub detects this and partitions isolates one of its ports to break the loop A segment is the length of cable connected to a port Packets are the units of information your workstation...

Page 17: ...y 5 screened cables must be used to ensure compliance with the Class B requirements of this standard The use of unscreened cables category 3 or category 5 complies with the Class A requirements Refer...

Page 18: ...proving 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 Mater...

Page 19: ...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 only...

Page 20: ...h 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 sind...

Page 21: ...ppareil 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 ne...

Page 22: ...t 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 tech...

Page 23: ...figuration 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 the 3...

Page 24: ...63 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 count...

Page 25: ...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 Country T...

Page 26: ...ica 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 Israe...

Page 27: ...m 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...

Page 28: ...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 This offer is not available where prohi...

Page 29: ...s 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 on loc...

Page 30: ...e 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 different out...

Page 31: ...31 Wall mounting screw hole guide 142mm 5 6in 3C16751_booklet book Page 31 Tuesday July 13 1999 11 29 AM...

Page 32: ...Part No DUA 1675 1AAA02 Published June 1999 32 3C16751_booklet book Page 32 Tuesday July 13 1999 11 29 AM...

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