3Com 8 manual Positioning Your Hub, Securing Your Hub, Using Your Hub

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Positioning Your Hub

When 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 25.4mm (1in.) clearance.

Securing Your Hub

There 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 your hub, 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 150mm (5.9in.) 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 connections to the hub and locate it over the screw heads. When in line, gently push the hub on to the wall and move it downwards to secure. When making connections, be careful not to push the hub up and off the wall.

CAUTION: Only wall mount single hubs, do not wall mount stacked hubs.

Also available from 3Com, is the OfficeConnect Mounting Unit (part number 3C16765). This allows you to firmly secure a stack of OfficeConnect devices to the desktop or onto a shelf in a rack.

Using Your Hub

You are now ready to create your network, using your OfficeConnect hub.

Read pages 10–16 if you have an:

OfficeConnect Ethernet Hub 4 or Hub 4C

Read pages 17–23 if you have an:

OfficeConnect Ethernet Hub 8 or 8C

When you have connected your equipment, you are ready to use your network. If you suspect there is a problem, refer to (depending on your hub):

“Problem Solving for the Hub 4 and 4C” on page 15

“Problem Solving for the Hub 8 and 8C” on page 22

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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 What Else Do I Need? Creating Your NetworkWorkstation Connections Transceiver ConnectionsHub Connections 10BASE-2Twisted Pair TP Cables Stacking the Units Together Rubber FeetStacking Clip Using Your Hub Positioning Your HubSecuring Your Hub Ethernet Hub 4 and 4C-Front Officeconnect Ethernet HUB 4 and 4CNetwork Utilization LEDs Hub 4C only AUI/COAX Status LEDs Hub 4C only10BASE-2 port Hub 4C only Ethernet Hub 4 and 4C-RearConnecting Workstations and Other Equipment to Your Hub Connecting OfficeConnect Ethernet Hubs TogetherConnecting Transceivers to the AUI Port 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 Officeconnect Ethernet HUB 8 and 8C Power LED Collision LEDEthernet Hub 8 and 8C-Front Port Status LEDsPower Adapter socket Uplink/Normal switch Ethernet Hub 8 and 8C-Rear10BASE-2 port Hub 8C only 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 Dimensions and Operating Conditions Dimensions and StandardsPower Weight StandardsEnd Of Life Statement Environmental StatementsRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité 3Com Knowledgebase Web Services Online Technical ServicesTechnical Support World Wide Web SiteSupport from 3Com Support from Your Network SupplierCountry Telephone Number Asia, Pacific Rim EuropeEurope, South Africa, and Middle East 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