OfficeConnect®

Dual Speed Hub 5 (3C16755)Dual Speed Hub 8 (3C16753)Dual Speed Hub 16 (3C16754)

User Guide

OfficeConnect®

Dual Speed Hub 5 (3C16755)Dual Speed Hub 8 (3C16753)Dual Speed Hub 16 (3C16754)

User Guide

3Com Corporation ■ 5400 Bayfront Plaza ■ Santa Clara, California ■ 95052-8145Copyright © 2001, 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.3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change.3Com Technologies provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.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 LEGENDIf 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 and OfficeConnect are registered trademarks of 3Com Corporation. The 3Com logo is a trademark of 3Com Corporation.Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Netscape Navigator is a registered trademark of Netscape Communications. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd. All other company and product names may be trademarks of the respective companies with which they are associated.

Environmental Statements

It is the policy of 3Com Corporation to be environmentally- friendly in all operations. To uphold our policy, we are committed to:

■ Establishing environmental performance standards that comply with national legislation and regulations.

■ Conserving energy, materials and natural resources in all operations.

■ Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental standards. Maximizing the recyclable and reusable content of all products.

■ Ensuring that all products can be recycled, reused and disposed of safely.

■ Ensuring that all products are labelled according to recognized environmental standards.

■ 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 Materials Statement

3Com products do not contain any hazardous or ozone- depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free.

The varnish is environmentally-friendly, and the inks are vegetable-based with a low heavy-metal content.

ndards 19ting Conditions 19

ments 20ent 20ls Statement 20tement about the Documentation 20

tement about the Product Packaging 20

ormation 21

hinweise 22

tes de sécurité 23

24es 24 24 Web Services 24

twork Supplier 25 25r Repair 28

imited Warranty 29

nts 31

3

Introduction 5

Creating your Network 6Dual Speed Hub 8—Front 6Dual Speed Hub 8—Rear 7

Dual Speed Hub 16—Front 8Dual Speed Hub 16—Rear 9

Before You Start 10

Workstation Connections 10Twisted Pair (TP) Cables 10Hub Connections 10

Stacking the Units Together 11The Rubber Feet 11The Stacking Clip 11

Positioning Your Hub 12Securing Your Hub 12Connecting Workstations and Other Equipment to Your Hub 13

Connecting Another OfficeConnect Hub 13Fast Ethernet (100Mbps) Configuration Rules 13Ethernet (10Mbps) Configuration Rules 14

Making the Connection to Another Hub 15Checking Hub Connections 15Spot Checks 15

Problem Solving 16

Networking Terminology 18

Dimensions and StaDimensions and Opera

Standards 19

Environmental StateEnd Of Life StatemRegulated MateriaEnvironmental Sta

Environmental Sta

Important Safety Inf

Wichtige Sicherheits

Consignes importan

Technical Support Online Technical ServicWorld Wide Web Site 3Com Knowledgebase

Support from Your NeSupport from 3Com Returning Products fo

3Com Corporation L

Regulatory Stateme

4

eed of the connected equipment and priate speed. If you wish to extend an ork into Fast Ethernet, adding a Dual

and Hub 16, can offer a more n path than adding both a 100Mbps ps switch.

rk With OfficeConnect® Dual Speed Hub

t more workstations, simply use the ct another OfficeConnect hub to form

INTRO

Welcome modern buinformatiobe one of recently, oadvantagehas chang

The Officeare ideal fattractivelyother Officthe OfficeCthe OfficeC

The Officehubs (repeallow you and Fast Edevices. Reon page 1

When refe‘Hub’.

Each port 10BASE-T

5

DUCTION

to the world of networking with 3Com® . In the siness environment, communication and sharing

n is crucial. Computer networks have proved to the fastest modes of communication but, until nly large businesses could afford the networking . The OfficeConnect® product range from 3Com ed this, bringing networks to the small office.

Connect Dual Speed Hub 5, Hub 8 and Hub 16 or creating small networks. They are compact and designed for desktop use and can be used with eConnect products. These products form part of onnect range which neatly stack together with onnect stacking clip.

Connect Dual Speed Hubs are easy-to-use Class II aters) with 10/100BASE-TX ports. All three hubs to set up a network with both Ethernet (10Mbps) thernet (100Mbps) workstations and other fer to "Connecting Another OfficeConnect Hub"

3 for more information.

rring to these products, this guide uses the term

on the Hub can be connected to either a (Ethernet) or a 100BASE-TX (Fast Ethernet) device.

The port senses the spoperates at the approexisting Ethernet netwSpeed Hub 5, Hub 8 cost-effective migratiohub and a 10/100Mb

Figure 1 Small Netwo

If you need to connecstacking clip to connea stack.

Speed Hub 8

CREATIN

Dual Speed

Power LEDgreenIndicates that tpowered on.

P

6

G YOUR NETWORK

Hub 5 and Dual Speed 8—Front

he hub is

ower Collision

10M 100M

Green = 100M, Yellow = 10M, Flash = Activity OfficeConnect Dual

Port Status LEDsgreen (100Mbps link) / yellow (10Mbps link)If the LED is on, the link between the port and the nextpiece of network equipment is OK. If the LED isflashing, the link is OK and data is being received. If theLED is off, nothing is connected, or the connecteddevice is switched off, or there is a problem with theconnection (refer to the “Problem Solving” section).

Collision LEDsyellowFlash each time a collision is detected on the Hub's100Mbps or 10Mbps segment. Occasional collisionsare a normal part of network operation; however,sustained collisions may indicate network congestion.

Port Status

1 2 3 4 5 6 7 8

Dual Sp

1x

10-31.0 A

-

0BASE-TX portsP cable with RJ-45ou can connect the Hub toon or other equipment that-T or 100BASE-TX port. Eache of autosensing for 10Mbpsperation. Ports operate inode.

ISSEMENT: Ports RJ-45. Ile prises femelles blindées des RJ-45. Vous ne pouvez pas

ser comme prise dene. Branchez uniquementnecteurs de données RJ-45

prises femelles.

7

eed Hub 5 and Dual Speed 8—Rear

POWER

8

0 VDCMAX

+

Uplink/Normal

Power Adapter socketOnly use the power adapterthat is supplied with thisOfficeConnect Dual SpeedHub 8. Do not use any otheradapter.

Eight 10/10Use suitable Tconnectors. Yany workstatihas a 10BASEport is capablor 100Mbps ohalf-duplex m

Uplink/Normal switchAffects the operation of port 8. If you areconnecting another hub to port 8, set toUplink (in), otherwise set to Normal (out).Refer to “Connecting AnotherOfficeConnect Hub” on page 13.Note: For Dual Speed Hub5, substitute‘port 5’ for ‘port 8’.

WARNING: RJ-45 ports. These areshielded RJ-45 data sockets. Theycannot be used as telephone sockets.Only connect RJ-45 data connectors tothese sockets.

WARNHINWEIS: RJ-45-AnschlüsseDies sind abgeschirmte RJ-45-Datenbuchsen. Sie können nicht alsTelefonanschlußbuchsen verwendetwerden. An diesen Buchsen dürfennur RJ-45-Datensteckerangeschlossen werden.

AVERTs'agit ddonnéeles utilitéléphodes consur ces

Dual Spee

twork Utilization LEDs

en / yellow / oranget row:10Mbps; right row:100Mbps)icate how much the 100Mbps and 10Mbpsments of your network are being used.

b 16

0%

8

d Hub 16—Front

Power LED

greenIndicates that the powersupply to the Hub is

Collision LEDs

yellowFlash each time a collision is detected on theHub's 100Mbps or 10Mbps segment. Occasionalcollisions are a normal part of network operation;however, sustained collisions may indicate aproblem.

Ne

gre(lefIndseg

Power

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

100M10M

Collision

1% 10% 40% 80%

Port Status Network Utilization

OfficeConnect Dual Speed Hu

10M 100M

Green = 100M, Yellow = 10M, Flash = Activity

81% 10% 40%

Port Status LEDsgreen (100Mbps link) / yellow (10Mbps link)If the LED is on, the link between the port and the nextpiece of network equipment is OK. If the LED isflashing, the link is OK and data is being received. If theLED is off, nothing is connected, or the connecteddevice is switched off, or there is a problem with theconnection (refer to the “Problem Solving” section).

Dual Sp

1X

9X

AVERTISSEMENT: Ports RJ-45. Ils'agit de prises femelles blindées dedonnées RJ-45. Vous ne pouvez pasles utiliser comme prise detéléphone. Branchez uniquementdes connecteurs de données RJ-45sur ces prises femelles.

een 10/100BASE-TX portsuitable TP cable with RJ-45ectors. You can connect the Hub toorkstation or other equipment that

10BASE-T or 100BASE-TX port. Eachis capable of autosensing for 10Mbps0Mbps operation. Ports operate inuplex mode.

9

eed Hub 16—Rear

10/100BASE-TX

16

8X

Uplink/Normal

WARNING: RJ-45 ports. These areshielded RJ-45 data sockets. Theycannot be used as telephone sockets.Only connect RJ-45 data connectors tothese sockets.

WARNHINWEIS: RJ-45-AnschlüsseDies sind abgeschirmte RJ-45-Datenbuchsen. Sie können nicht alsTelefonanschlußbuchsen verwendetwerden. An diesen Buchsen dürfennur RJ-45-Datensteckerangeschlossen werden.

Power Adapter socketOnly use the power adapterthat is supplied with thisOfficeConnect Dual SpeedHub 16. Do not use any otheradapter.

SixtUse sconnany whas aport or 10half-d

Uplink/Normal switchAffects the operation of port 16. Ifyou are connecting another hub toport 16, set to Uplink (in), otherwiseset to Normal (out). Refer to“Connecting Another OfficeConnectHub” on page 13.

10-30 VDC1.0 A MAX

+-

with the 10BASE-T standard, ports station connections have been raphical symbol ‘x’. This denotes a

ort’s internal wiring, for example 1x,

les

tions and other equipment to the gh’ TP cables with RJ-45 connectors cts use RJ-45 type connectors). A is one where each pin of one to the same pin of the other e shielded (screened) or unshielded; use shielded cable. Cables used for ASE-TX connections must be data r supplier should stock suitable

a single cable is 100m (328ft). (100Mbps) Configuration Rules” on rmation on cable lengths in a

onnect units to your Hub, you ble for each unit.

10

Before You StartYour OfficeConnect hub comes with:

■ One power adapter for use with the OfficeConnect hub.

■ A Product Registration card for you to fill out and return.

■ Four rubber feet.

■ A stacking clip.

The extra parts mentioned in the next section are not supplied with the hub.

Workstation Connections

To connect workstations or other equipment to your hub, you need:

1 One 10BASE-T, 10/100BASE-TX, or 100BASE-TX adapter card for each workstation. 3Com produce a range of easy-to-install network adapter cards, which provide your workstations with a suitable connection.

2 An operating system (for example, Netware or Windows 95/98) with network support configured, running on your workstations.

3 One suitable TP cable for each workstation.

In order to complydesigned for workmarked with the gcrossover in the p2x, 3x...

Twisted Pair (TP) Cab

To connect your workstaHub, use ‘straight-throu(all OfficeConnect produ‘straight-through’ cable connector is connected connector. Cables can bwe recommend that you100BASE-TX or 10/100Bgrade (Category 5). Youcables.

The maximum length ofRefer to “Fast Ethernet page 13 for further info100Mbps network.

Hub Connections

To connect other OfficeCneed one suitable TP ca

3

21

nit on top of the clip and align it with nit below.

on the unit to secure it onto the clip, ning pieces fit into the slots on the unit in Figure 2 (picture 2).

ur Units Together

nit together with the clip. If you hook ne of the the fastening pieces and then out of the slot, the clip should come per unit attached to it.

e center, so it bends towards the base hen separate once the clip is loose.

FasteningPiece

2Fastening

Piece

11

Stacking the Units Together

The Rubber Feet

The four self-adhesive rubber feet prevent your hub from moving around on your desk. Only stick the feet to the marked areas at each corner of the underside of your hub if you intend to place the unit directly on top of the desk. Do not fix the feet if you are going to use the clip.

The Stacking Clip

The stacking clip allows you to stack your OfficeConnect units together neatly and securely.

CAUTION: You can stack up to a maximum of four units. Smaller units must be stacked above larger units.

To fit the clip:

1 Place your unit on a flat surface.

2 Fit the clip across the top of the unit, as shown inFigure 2 (picture 1), ensuring that the longer sections of the fastening pieces are pointing 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 another unit:

1 Rest the second uthe front of the u

2 Press down gentlyensuring the fastebelow, as shown

Figure 2 Stacking Yo

To remove the clip:

1 Remove the top ua finger around opull it gently fromaway with the up

2 Push the clip in thof the unit, and t

1

s to the unit and locate it over the ine, gently push the unit on to the wards to secure. When making not to push the unit up and off the

wall mount single units, do not wall nits.

m, is the OfficeConnect Mounting 765). This allows you to firmly

Connect devices to the desktop or

12

Positioning Your HubWhen installing your OfficeConnect hub, ensure:

■ It is out of direct sunlight and away from sources of heat.

■ Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers.

■ Water or moisture cannot enter the case of the unit.

■ Air flow around the unit and through the vents in the side of the case is not restricted. We recommend you provide a minimum of 25.4 mm (1in.) clearance.

Securing Your HubThere are two slots on the underside of the OfficeConnect hub which can be used for wall mounting. It is recommended that you mount the hubs with the LEDs facing upwards to prevent dust entering the cooling vents.

When wall mounting 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 142mm (5.6in.) apart. Use the 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 connectionscrew heads. When in lwall and move it downconnections, be carefulwall.

CAUTION: Only mount stacked u

Also available from 3CoUnit (part number 3C16secure a stack of Officeonto a shelf in a rack.

in, its latch locks it in to place. To , push the connector’s latch in and

ort connections, so you can start using iately. If you need more ports, simply onnect hub.

ther OfficeConnect Hubnect another OfficeConnect hub to . Alternatively, you may wish to add ing 10Mbps network. When extending ould be aware of the configuration

two Dual Speed Hub units directly ink between them operates at

Mbps) Configuration Rules

8 and Dual Speed Hub 16 are Class II ct directly two Class II Fast Ethernet ernet hubs cannot be connected Ethernet hubs). The total length of ween two workstations, or between a n-repeater piece of equipment (such as xceed 205m (672ft). Each cable (A, B, d 100m (328ft), as shown in Figure 3

13

Connecting Workstations and Other Equipment to Your Hub

WARNING: Please read the ‘Important Safety Information’ section before you start.

WARNHINWEIS: Bitte lesen Sie den Abschnitt ‘Wichtige Sicherheitsinformationen’ sorgfältig durch, bevor Sie das Gerät einschalten.

AVERTISSEMENT: Veuillez lire attentivement la section “Consignes importantes de sécurité” avant de mettre en route.

CAUTION: The equipment connected to the Hub must be set to operate in auto-negotiate or half duplex mode.

Connecting workstations and other equipment to your Hub is easy. To connect a workstation to any of the Hub’s ports, use a ‘straight-through’ TP cable. Refer to “Twisted Pair (TP) Cables” on page 10 for further information.

If you are using port 5 (Dual Speed Hub 5) or 8 (Dual Speed Hub 8) or 16 (Dual Speed Hub 16) to connect a workstation, ensure the Uplink/Normal switch is set to Normal (out).

TP cables are very easy to use. To connect a cable, simply slot the connector into the appropriate RJ-45 port. When

the connector is fullydisconnect the cableremove it.

The Hub detects all pyour network immedadd another OfficeC

Connecting AnoYou may wish to conyour Dual speed Hubyour Hub to an existyour network, you shrules.

If you connecttogether, the l100Mbps.

Fast Ethernet (100

The Dual Speed Hubhubs. You can connehubs (Class I Fast Ethdirectly to other Fastcable (A + B + C) betworkstation and a noa switch), must not eor C) must not exceeoverleaf.

onfiguration Rules

imum of four Ethernet (10Mbps) workstations, or between a repeater piece of equipment (such as ust not exceed 100m (328ft). An ure 4.

Ethernet (10Mbps) Network

14

3Com recommends that the cable (B) between the Fast Ethernet hubs is no longer than 5m (16.4ft). This allows the maximum hub-to-workstation cable length (A or C) of 100m (328ft).

Figure 3 Configuration Rules and Example of a Fast Ethernet (100Mbps) Network

Ethernet (10Mbps) C

You can connect a maxhubs in series between workstation and a non-a switch). Each cable mexample is shown in Fig

Figure 4 Example of an

nections for OfficeConnect Hubs

15

Making the Connection to Another Hub

You can connect a 10BASE-T, 100BASE-TX, or another 10/100BASE-TX OfficeConnect hub to any port on the Dual Speed Hub. Use the following method:

1 Using a straight-through cable, connect the Uplink/Normal port of the Dual Speed Hub to any of the ports on the other hub (as shown in Figure 5). If using an Uplink/Normal port on the other hub, set its Uplink/Normal switch to Normal (out).

2 Set the Uplink/Normal switch for the Uplink/Normal port on the Dual Speed Hub to Uplink (in).

Checking Hub Connections

When you have connected all the appropriate workstations and other equipment 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 LEDs light green. If the port is operating at 10Mpbs, the LEDs light yellow. If neither LED is on, check your connections.

Spot Checks

At frequent intervals, visually check that:

■ Case vents are not obstructed.

■ Cabling is secure and not pulled taut.

Figure 5 Correct Con

and another OfficeConnect hub ur connections; follow the “Connecting Another

ction on page 13. It is likely that an incorrectly set.

t for a port that has a following:

ight-through’ cable which is properly nds, and is not damaged. Refer to bles” on page 10.

ected to the Hub is powered on, nd contains the correct type of Figure 6 to compare the wiring of a a crossover cable.

ivers have loaded and initialised

PROBLE

The OfficeCodetecting andThese problemdisconnectedIf this sectionsupplier for in

Perform thes

■ Ensure all

■ Power eac5 seconds

Check the fo

Power LED nIf there is stiladapter whicOfficeConnecpower adap

10Mbps Pordevice conna high enougrecommend yproblem withequipment.

16

M SOLVING

nnect Hub has been designed to aid you when solving possible problems with your network. s are rarely serious; the cause is usually a

or damaged cable, or incorrect configuration. does not solve your problem, contact your formation on what to do next.

e actions first:

network equipment is powered on.

h piece of network equipment off, wait about and then power each one on.

llowing symptoms and solutions:

ot lit. Check your power adapter connection. l no power, you may have a faulty power h needs replacing with an identical t power adapter. Do not use any other ter with the Hub.

t Status LED lit for a port with a 100Mbps ected. This may be because the cable is not of h quality to carry Fast Ethernet signals (we ou use a Category 5 cable), or due to a the network card (NIC) of the attached

Link between the Hubnot working. Check yoinformation given in theOfficeConnect Hub” seUplink/Normal switch is

Port Status LED not liconnection. Check the

■ You are using a ‘straconnected at both e“Twisted Pair (TP) Ca

■ The equipment connoperating correctly aconnection. Refer tostraight-through and

■ Your PCs network drcorrectly.

17

Figure 6 Straight-through Cable/Crossover Cable

h of cable connected to a port.

f information your workstations and o each other over the network. A of the packet and can be unicast , multicast (sent to multiple (sent to all devices).

e amount of network traffic the y one time (information capacity) cond (bps). Workstations or

e network heavily are referred to as Fast Ethernet has a higher t, so it can cope with larger h results in faster operation.

ws information to flow in either th directions simultaneously.

ormal ethernet operation and occur ent attempts to transmit at the stained increase in the number of problem with the device.

NETWO

A Network iIBM-compatibprinters), coninformation osome are wit

A Local Areaoffice, that sp

Ethernet is ato pass inform10Mbps (meg

Fast Ethernefaster than st

10BASE-T anEthernet prot10BASE-T run100Mbps. Thconnectors fo

A Network Lequipment ardetects this abreak the loo

18

RKING TERMINOLOGY

s a collection of workstations (for example, le PCs) and other equipment (for example,

nected for the purpose of exchanging r sharing resources. Networks vary in size,

hin a single room, others span continents.

Network (LAN) is a network, usually in an ans no more than a single site.

type of LAN, referring to the technology used ation around the network. It operates at abits per second).

t is a type of LAN that runs up to 10 times andard Ethernet. It operates at 100Mbps.

d 100BASE-TX are the names given to the ocol that runs over Twisted Pair (TP) cable. s at 10Mbps whilst 100BASE-TX operates at e OfficeConnect hub uses RJ-45 type r connecting your TP network.

oop occurs when two pieces of network e connected by more than one path. Your hub nd partitions (isolates) one of its ports to p.

A segment is the lengt

Packets are the units oother equipment send tframe is the data part (sent to a single device)devices), or broadcast

Bandwidth refers to thnetwork can hold at anmeasured in bits per seapplications that use thusing high bandwidth. bandwidth than Etherneamounts of traffic, whic

A half duplex link allodirection, but not in bo

Collisions are part of nif other network equipmsame time. A sudden sucollisions may indicate a

ISO 8802/3IEEE 802.3

UL 1950, EN 60950CSA 22.2 #950IEC 950

EN 55022 Class BEN 50082-1FCC Part 15 Class B*ICES-003 Class BVCCI Class B

CNS 13438 Class A

EN 60068 (IEC 68)

y Statements” on page 31 for on. †

DIMEN

Dimensi

3 VA10.24powe

0 to 9(non-humid

0 to 4operatemp

8 VA27.30powe

0 to 9(non-chumid

0 to 4operatempe

19

SIONS AND STANDARDS

ons and Operating Conditions Standards

Functional:

Safety:

EMC:

Environmental:

*Refer to “Regulatorconditions of operati

220mm (8.7in.)

35.8mm(1.4in.)

135.4mm (5.3in.)

BThU/hrr requirement

0%condensing)ity

0°C (32 to 105°F)tingerature

Dual Speed Hub 5 600g (1.3 lb)Dual Speed Hub 8 600g (1.3 lb)

228mm (9.12in.)

54mm(2.1in.)

185mm (7.3in.)

BThU/hrr requirement

0%ondensing)ity

0°C (32 to 105°F)tingrature

Dual Speed Hub 16 1kg (2.2 lb)

nt

or the recovery, reclamation and safe e electronic components.

Statement

contain any hazardous or l.

ment about the Documentation

this product is printed on paper that , managed forests; it is fully clable, and is completely h is environmentally-friendly, and the d with a low heavy-metal content.

ment about the Product

product is fully recyclable. It has a ) waste content of at least 40% by etal content.

ENVIRO

It is the policenvironmentapolicy, we are

■ Establishincomply wi

■ Conservinoperations

■ Reducing

■ Ensuring tenvironme

■ Maximizinproducts.

■ Ensuring tdisposed o

■ Ensuring trecognized

■ Improving

20

NMENTAL STATEMENTS

y of 3Com Corporation to be lly-friendly in all operations. To uphold our committed to:

g environmental performance standards that th national legislation and regulations.

g energy, materials and natural resources in all .

the waste generated by all operations.

hat all waste conforms to recognized ntal standards.

g the recyclable and reusable content of all

hat all products can be recycled, reused and f safely.

hat all products are labelled according to environmental standards.

our environmental record on a continual basis.

End Of Life Stateme

3Com processes allow fdisposal of all end-of-lif

Regulated Materials

3Com products do not ozone-depleting materia

Environmental State

The documentation for comes from sustainablebiodegradable and recychlorine-free. The varnisinks are vegetable-base

Environmental StatePackaging

The packaging for this recycled (post consumerweight, and no heavy-m

-replaceable fuses or user-serviceable ub. If you have a physical problem with ot be solved with problem solving de, contact your supplier.

wer adapter before moving the unit.

-45 ports. These are shielded RJ-45 hey cannot be used as telephone onnect RJ-45 data connectors to these

IMPOR

WAmusdirecYou care

■ Exceptioremova

■ Only staOfficeC

■ To ensuonly usunit.

■ The socaccessibdisconn

■ This unconditiomaintaialso op

21

TANT SAFETY INFORMATION

RNING: Warnings contain directions that you t follow for your personal safety. Follow all tions carefully.must read the following safety information fully before you install or remove the unit:

nal care must be taken during installation and l of the unit.

ck the OfficeConnect hub with other onnect units.

re compliance with international safety standards, e the power adapter that is supplied with the

ket outlet must be near to the unit and easily le. You can only remove power from the unit by ecting the power adaptor from the outlet.

it operates under SELV (Safety Extra Low Voltage) ns according to IEC 950. The conditions are only

ned if the equipment to which it is connected erates under SELV conditions.

■ There are no userparts inside the hthe unit that cannactions in this gui

■ Disconnect the po

WARNING: RJdata sockets. Tsockets. Only csockets.

eräts erfolgt unter den icherheitskleinstspannung) gemäß gungen sind nur gegeben, wenn ät angeschlossenen Geräte unter etrieben werden.

m Benutzer zu ersetzende oder zu Gerät vorhanden. Wenn Sie ein

itch haben, das nicht mittels der er Anleitung behoben werden kann, rem Lieferanten in Verbindung.

Geräts das Netzadapterkabel

RJ-45-Anschlüsse. Dies sind 5-Datenbuchsen. Sie können nicht ßbuchsen verwendet werden. An ürfen nur RJ-45-Datenstecker rden.

WICHTI

WARNAnweisbefolgebefolgeSie müsorgfäloder au

■ Bei der Inshöchster V

■ Stapeln SiGerätes zu

■ Aufgrund Gerät nur werden.

■ Die Netzstleicht zugäkann nur der Netzst

22

GE SICHERHEITSHINWEISE

HINWEIS: Warnhinweise enthalten ungen, die Sie zu Ihrer eigenen Sicherheit n müssen. Alle Anweisungen sind sorgfältig zu n. ssen die folgenden Sicherheitsinformationen tig durchlesen, bevor Sie das Geräts installieren sbauen:

tallation und beim Ausbau des Geräts ist mit orsicht vorzugehen.

e das Geräts nur mit anderen OfficeConnect sammen.

von internationalen Sicherheitsnormen darf das mit dem mitgelieferten Netzadapter verwendet

eckdose muß in der Nähe des Geräts und nglich sein. Die Stromversorgung des Geräts

durch Herausziehen des Gerätenetzkabels aus eckdose unterbrochen werden.

■ Der Betrieb dieses GSELV-Bedingungen (SIEC 950. Diese Bedinauch die an das GerSELV-Bedingungen b

■ Es sind keine von dewartende Teile in demProblem mit dem SwFehleranalyse in diessetzen Sie sich mit Ih

■ Vor dem Ausbau desherausziehen.

WARNHINWEIS:abgeschirmte RJ-4als Telefonanschludiesen Buchsen dangeschlossen we

rties remplaceables par les utilisateurs r les utilisateurs à l’intérieur du moyeu.

roblème physique avec le moyeu qui ne lu avec les actions de la résolution des

e guide, contacter votre fournisseur.

tateur électrique avant de retirer cet

NT: Ports RJ-45. Il s'agit de prises es de données RJ-45. Vous ne pouvez comme prise de téléphone. Branchez s connecteurs de données RJ-45 sur lles.

CONSI

AVEconsvotratteNouconsretir

■ Faites tdu grou

■ SeulemOfficeC

■ Pour gasécuritéavec ce

■ La priseet son l’appareélectriq

■ L’apparede sécuconditioauquel conditio

23

GNES IMPORTANTES DE SÉCURITÉ

RTISSEMENT: Les avertissements présentent des ignes que vous devez respecter pour garantir e sécurité personnelle. Vous devez respecter ntivement toutes les consignes.s vous demandons de lire attentivement les ignes suivantes de sécurité avant d’installer ou de er l’appareil:

rès attention lors de l'installation et de la dépose pe.

ent entasser le moyer avec les autres moyeux onnects.

rantir le respect des normes internationales de , utilisez uniquement l'adaptateur électrique remis t appareil.

secteur doit se trouver à proximité de l’appareil accès doit être facile. Vous ne pouvez mettre il hors circuit qu'en débranchant son cordon

ue au niveau de cette prise.

il fonctionne à une tension extrêmement basse rité qui est conforme à la norme CEI 950. Ces ns ne sont maintenues que si l'équipement il est raccordé fonctionne dans les mêmes ns.

■ Il n’y a pas de paou entretenues paSi vous avez un ppeut pas être résoproblèmes dans c

■ Débranchez l'adapappareil.

AVERTISSEMEfemelles blindépas les utiliser uniquement deces prises feme

ess to online support information entation and software, as well as ge from technical education to

ssional services.

base Web Servicestains technical product information rt technical engineers around the orld Wide Web at:

.3com.com

om customers and partners he-clock access to technical om products.

TECHNIC

3Com providthrough a vaservices.

Information cpublication. Frecommends Wide Web si

Online Tec3Com offers 7 days a wee

■ World Wid

■ 3Com Kno

World WidTo access the3Com Corpointo your Inte

http://www.

24

AL SUPPORT

es easy access to technical support information riety of services. This section describes these

ontained in this section is correct at time of or the most recent information, 3Com that you access the 3Com Corporation World

te.

hnical Servicesworldwide product support 24 hours a day, k, through the following online systems:

e Web site.

wledgebase Web Services.

e Web Site latest networking information on the ration World Wide Web site, enter this URL rnet browser:

3com.com/

This service provides accsuch as technical documsupport options that ranmaintenance and profe

3Com KnowledgeThis interactive tool concompiled by 3Com expeglobe. Located on the W

http://knowledgebase

This service gives all 3Ccomplementary, round-tinformation on most 3C

Comobtain assistance from the 3Com online r from your network supplier, 3Com hone support services. To find out more ptions, call the 3Com technical

hone number at the location nearest

Com for assistance, have the following

me, part number, and serial number.

rdware and software, including revision

essages.

nt configuration changes, if applicable.

25

Support from Your Network SupplierIf you require additional assistance, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.

When you contact your network supplier for assistance, have the following information ready:

■ Product model name, part number, and serial number.

■ A list of system hardware and software, including revision levels.

■ Diagnostic error messages.

■ Details about recent configuration changes, if applicable.

If you are unable to contact your network supplier, see the following section on how to contact 3Com.

Support from 3If you are unable to technical resources ooffers technical telepabout your support otelephone support pyou.

When you contact 3information ready:

■ Product model na

■ A list of system halevels.

■ Diagnostic error m

■ Details about rece

one Number

61 00137 or50 159061 463

611 223055 645511 2610 611 2000

22778837631112063141695014312554825 307266197

26

Here is a list of worldwide technical telephone support numbers:

Country Telephone Number Country Teleph

Asia, Pacific RimAustraliaHong KongIndiaIndonesiaJapanMalaysiaNew ZealandPakistanPhilippines

1 800 678 515800 933 486+61 2 9937 5085001 800 61 0090031 61 64391800 801 7770800 446 398+61 2 9937 50851235 61 266 2602

P.R. of China

SingaporeS. Korea

From anywhere in S. Korea:From Seoul:

Taiwan, R.O.C.Thailand

10800 021 63800 61

00798 (0)2 340080 6001 80

EuropeFrom anywhere in Europe, call: +31 (0)30 6029900 phone

+31 (0)30 6029999 fax

Europe, South Africa, and Middle EastFrom the following countries, you may use the toll-free numbers:

AustriaBelgiumDenmarkFinland FranceGermanyHungaryIrelandIsraelItaly

0800 2974680800 71429800 173090800 1131530800 9179590800 182150200800 128131800 5531171800 94537941678 79489

NetherlandsNorwayPolandPortugalSouth AfricaSpainSwedenSwitzerlandU.K.

0800 0800 1100800 0800 80800 9900 98020 790800 50800 9

00 CARE (01 800 3)T +800 666 5065 666 5065T +800 666 5065

phone Number

27

Latin AmericaArgentinaBrazilChileColombia

AT&T +800 666 50650800 13 32661230 020 064598012 2127

MexicoPeruPuerto RicoVenezuela

01 8227AT&800AT&

North America 1 800 876-3266

Country Telephone Number Country Tele

0800 2974680800 71429800 173090800 1131530800 9179590800 182150200800 1281318005531171800 94537941678 794890800 0227788800 1137600800 31112060800 8314160800 995014900 983125020 7954820800 55 30720800 966197

1 800 876 3266 1 408 326 7120(not toll-free)

Telephone Number Fax Number

28

Returning Products for RepairBefore you send a product directly to 3Com for repair, you must first obtain a Return Material Authorization (RMA) number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.

To obtain an authorization number, call or fax:

Country Telephone Number Fax Number

Asia, Pacific Rim + 65 543 6500 + 65 543 6348

Europe, South Africa, and Middle East

+ 31 30 6029900 + 31 30 6029999

Latin 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:

AustriaBelgiumDenmarkFinlandFranceGermanyHungaryIrelandIsraelItalyNetherlandsNorwayPolandPortugalSouth AfricaSpainSwedenSwitzerlandU.K.

U.S.A. and Canada

Country

SERVICE

orporate Service Center or an Authorized 3Com Service Center iod to obtain warranty service authorization. Dated proof of ized reseller may be required. Products returned to 3Com's pre-authorized by 3Com with a Return Material Authorization side of the package, and sent prepaid and packaged nd it is recommended that they be insured or sent by a method ackage. The repaired or replaced item will be shipped to t later than thirty (30) days after 3Com receives the defective

the event a product completely fails to function or exhibits a ip within the first forty-eight (48) hours of installation but no e date of purchase, and this is verified by 3Com, it will be arrival (DOA) and a replacement shall be provided by advance oduct will normally be shipped not later than three (3) ation of the DOA product, but may be delayed due to export advance replacement is provided and Customer fails to return in fifteen (15) days after shipment of the replacement, 3Com

acement product, at list price.

any software, firmware, information, or memory data of or integrated with any products returned to 3Com for repair,

nnect® product comes with telephone technical support for day period begins on the date of Customer's product

s available from 3Com from 9 a.m. to 5 p.m., local time, local holidays. Telephone technical support is limited to the and may include assistance with installation, product specific f equipment problems. Please refer to the Technical Support lephone numbers.

e technical support will be in the form of a return call from a usiness the following business day.

hone technical support, you must register on the 3Com Web dex.htm, and provide your date of purchase, product

m reserves the right to modify or cancel this telephone out advance notice. This offer is not available where

ervice are available at no charge, and provide software and d technical information about 3Com products.

ERATE AS WARRANTED ABOVE, CUSTOMER'S SOLE REMEDY FOR L BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES

29

3Com Corporation LIMITED WARRANTY

3Com OfficeConnect Dual Speed Hub 5, Hub 8, Hub 16The duration of the warranty for the OfficeConnect Dual Speed Hub 5 (3C16755), Dual Speed Hub 8 (3C16753) and Dual Speed Hub 16 (3C16754) 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.

OBTAINING WARRANTY Customer must contact a 3Com Cwithin the applicable warranty perpurchase from 3Com or its authorCorporate Service Center must be(RMA) number marked on the outappropriately for safe shipment, athat provides for tracking of the pCustomer, at 3Com's expense, noproduct.

Dead- or Defective-on-Arrival. In defect in materials or workmanshlater than thirty (30) days after thconsidered dead- or defective-on-replacement. The replacement prbusiness days after 3Com’s verificor import procedures. When an the original product to 3Com withwill charge Customer for the repl

3Com shall not be responsible forCustomer contained in, stored on,whether under warranty or not.

ADDITIONAL SERVICES:Telephone Support. This OfficeConinety (90) days. The ninety (90)purchase.

The telephone technical support iMonday through Friday, excluding3Com products designated aboveconfiguration, and identification oappendix in the User Guide for te

Response to requests for telephon3Com representative by close of b

To qualify for this 90 days of telepsite at http://support.3Com.com/innumber, and serial number. 3Cosupport offering at any time, withprohibited or restricted by law.

3Com’s Web and Bulletin Board Sfirmware upgrades, a bug list, an

WARRANTIES EXCLUSIVE

IF A 3COM PRODUCT DOES NOT OPBREACH OF THAT WARRANTY SHALPAID, AT 3COM'S OPTION. TO THE

o not allow the exclusion or limitation of implied tal or consequential damages for certain products

ion of liability for personal injury, so the above limitations r application to you. When the implied warranties are not ty, they will be limited to the duration of the applicable

s you specific legal rights which may vary depending on

ed by the laws of the State of California, U.S.A. excluding luding the United Nations Convention on Contracts for

30

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.

LIMITATION OF LIABILITY

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.

DISCLAIMER

Some countries, states, or provinces dwarranties or the limitation of incidensupplied to consumers, or the limitatand exclusions may be limited in theiallowed to be excluded in their entirewritten warranty. This warranty givelocal law.

GOVERNING LAW

This Limited Warranty shall be governits conflicts of laws principles and excthe International Sale of Goods.

3Com Corporation5400 Bayfront PlazaSanta Clara, CA 95054(408) 326-5000

A STATEMENT

Class B digital apparatus meets all requirements of the Canadian Interference-Causing ipment Regulations.

appareil numérique de la classe B respecte toutes les exigences du Règlement sur le ériel brouilleur du Canada.

product complies with the European Low Volatage Directive 73/23/EEC and EMC Directive 36/EEC as amended by European Directive 93/68/EEC.

CI STATEMENT

IQ STATEMENT

le guide

31

REGULATORY STATEMENTS

FCC STATEMENT

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference 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 different outlet so that equipment and receiver are on different branch circuits.

■ Consult the dealer or an experienced radio/television technician for help.

INFORMATION TO THE USER

The user may find the following booklet prepared by the Federal Communications Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

In order to meet FCC emissions limits, this equipment must be used only with cables which comply with IEEE 802.3.

CSThisEqu

Cet mat

This89/3

VC

BC

Wall mounting screw ho142mm (5.6in.)

Part No. DUA1675-1AAA05Published May 2001

32