3Com 4800G Getting Started Manual page 42

42 C 3: I
HAPTER NSTALLING THE
c
S
WITCH
positioning slot, as shown in Figure 37. Connect the other connector (in the p2
direction) to the power socket of the RPS power module.
c) Connect one end of the AC power cable (delivered with the RPS) to the power
socket of the RPS power module and the other end to the socket of an external
AC power supply.
3 Check whether the RPS LED on the front panel of the switch is ON. If yes, the
power supply is properly connected.
CAUTION:
Make sure that the grounding cable has been properly connected before
■
powering on the switch.
You can use only the 12V RPS power cables recommended by 3Com.
■
Connecting the DC power cable of the Switch 4800G PWR 24-Port and
Switch 4800G 24-Port SFP
The Switch 4800G PWR 24-Port and Switch 4800G 24-Port SFP use the 48V RPS,
whose input voltage is in the range of -52 V to -55 V.
Figure 38 Appearance of the 48V RPS port
NULL NULL
+: -48V return terminal -: Negative terminal (-52 VDC to -55 VDC) of the
1 Connect one end of the grounding cable (delivered with the switch) to the
grounding screw on the rear panel and the other end to the ground nearby.
2 Connect one connector to the RPS port on the switch and use a small flat-module
screwdriver to fix the connector with two screws (delivered with the switch), as
shown in Figure 39.
Figure 39 Connect the 48V RPS connector to the chassis
Screw 2 Screw 2
RPS DC power
Connector parts Connector parts
Screw 1 Screw 1
Chassis Chassis
NULL: Reserved