D
ESCRIPTION
OF
H
ARDWARE
1-9
connection. This port can be connected to a site up to 5 km (16404 ft)
away with single-mode fiber cable.
1000BASE-ZX GBIC transceivers provide one long-wavelength
(1550 nm) Gigabit port that can be used for a long-haul connection to a
remote location. This port can be connected to a site up to 100 km
(62.1 miles) away with single-mode fiber cable.
Caution: Install only 5 V GBIC transceivers into the module slots.
Optional Redundant Power Unit
An optional Redundant Power Unit (RPU) is available that can supply
power to the switch in the event of failure of the internal power supply.
Power Supply Receptacle
The power receptacle is located on the rear panel of the switch. The
standard power receptacle is for the AC power cord. The receptacle
labeled “RPU” is for the optional Redundant Power Unit (RPU).
Figure 1-8. Power Supply Receptacle