3Com Hub 1000 SX manual Power Modules, Cabling Options

Using Optional Power Systems 2-9

Power Modules

At least one SuperStack II Advanced Redundant Power System Power Module Type 2 is required for each SuperStack II hub that you want to protect. The Hub 1000 SX requires the 100-watt, 3.3-volt version of the module (part number 3C16074).

One Advanced RPS with Power Modules configured with straight cables for standard usage can contain a maximum of four 100-watt Power Modules (and four 60-watt Power Modules), or eight 60-watt Power Modules. If each Power Module is configured for full redundancy with a SuperStack II Advanced Redundant Power System Y Cable Type 2 (part number 3C16079), an Advanced RPS can contain a maximum of eight 100-watt Power Modules, supporting as many as four Hub 1000 SX units.

Using the cable supplied with the Power Module, you connect the Power Module to the DC power connector located on the rear panel of the Hub 1000 SX. (For the DC power connector location, see Figure 2-1.)

In the event of a failure in a Power Module, an alert is automatically sent to the Advanced RPS management console software.

Cabling Options

You can supply AC power and DC power to the Hub 1000 SX simultaneously, so that if an AC power failure occurs, the hub switches to DC power supplied by the Advanced RPS unit. You can also supply only DC power to the hub with the Advanced RPS unit.

Table 2-4 summarizes the Advanced RPS configuration options.