
The
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 54 for a list of suggested solutions.
Connecting a You can connect a SuperStack 3 Advanced Redundant Power System to Redundant Power the Switch. This unit, which is also known as an RPS, is designed to
System maintain the power to your Switch if a power supply failure occurs.
For normal redundancy, the unit requires one Type 3 Power Module (part number 3C16075).
For full redundancy, the unit requires two Type 3 Power Modules combined using a Type 3
WARNING: If you are connecting the Switch to a Type 3 Power Module, read the Safety Information section in the Type 3 Power Module User Guide.
CAUTION: The Switch can only use a SuperStack Advanced Redundant
Power System output.
CAUTION: The Switch has no ON/OFF switch; the only method of connecting or disconnecting mains power is by connecting or disconnecting the power cord.
Choosing the Correct If your Switch has
Cables detect whether to operate in MDI or MDIX mode. Therefore you can make a connection to one of the ports with a
The
If
3Com recommends that you use at least Category 5 twisted pair cable — the maximum segment length for this type of cable is 100 m (328 ft).