3Com TP800 - OfficeConnect Hub User Manual - Page 4

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Wall Mounting the OfficeConnect Hub

There are two slots on the underside of the

OfficeConnect hub which are used for wall mounting.

You can mount the hub with the LEDs facing upwards

or downwards. You need two suitable screws. Ensure

that the wall you are going to use is smooth, flat, dry,

and sturdy.

When wall mounting your hub, ensure that it is within

reach of the power outlet.

For TP400 or TP800: Make two screw holes 150mm

(5.9in.) apart. Use the guide at the top of page 3 to

mark the position of the holes.

For TP1200: Make two screw holes 142mm (5.6in.)

apart. Use the guide at the top of this page 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.

Connecting Workstations and Other

Equipment to Your Hub

WARNING: Ensure you have read the Important Safety

Information section carefully before you start.

ACHTUNG: Versichern Sie sich, daß Sie den Abschnitt

mit den wichtigen Sicherheitshinweisen gelesen haben,

bevor Sie das Gerät benutzen.

AVERTISSEMENT: Assurer que vous avez lu

soigneusement la section de L'information de Sécurité

Importante avant que vous commenciez.

CAUTION: Do not power the hub off and on quickly.

Wait about 5 seconds between power cycles.

Connecting workstations and other equipment to your

hub is easy. Connect them using 100BASE-TX cables to

any of the hub's 100BASE-TX RJ45 ports.

100BASE-TX cables are very easy to use. To connect a

100BASE-TX cable, simply slot the connector into the

relevant RJ45 port. When the connector is fully in, its

latch locks it in place. To disconnect the cable, push in

the connector's latch and remove it.

The hub detects all port connections, so you can start

using your network immediately. When you need more

ports, simply add another OfficeConnect hub.

If you are using the highest-number port (port 4 on

TP400, port 8 on TP800, port 12 on TP1200) to

connect a workstation, ensure the MDI/MDIX switch is

set to MDIX (out).

Connecting OfficeConnect Hubs Together

You can increase the number of workstations that can

connect to your network by adding another

OfficeConnect hub.

You can directly connect together a maximum of two

Fast Ethernet hubs. The total length of cable (A + B + C

below) between two workstations, or between a

workstation and a non-repeater piece of equipment

(such as a switch), must not exceed 205m (672ft). Each

cable (A, B or C) must not exceed 100m (328ft).

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) to be used, as shown in the example.

Connecting 100BASE-TX Hubs

You can connect two OfficeConnect hubs together with

100BASE-TX in a number of ways, but for simplicity we

recommend the following method:

Connect the highest-number port (port 4 on TP400,

port 8 on TP800, port 12 on TP1200) of the lower hub

to any port of the upper hub.

Set the MDI/MDIX switch on the lower hub to MDI (in).

If you use the highest-number port of the upper hub

ensure that its MDI/MDIX switch is set to MDIX (out).

Correct Hub Connections Using 100BASE-TX