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Figure 3-13 Ground through an AC power PE wire
(1) Three-wire AC power input cable (2) Switch rear panel
Use the PGND cable provided with the switch to connect the grounding strip in the equipment room.
Otherwise, the grounding effect may not be ensured, which easily causes damage to the switch.
Connecting the Power Cord
Connecting an AC Power Cord
The 3Com Baseline Switch 2900 Family uses an external AC power system for its power supply. Follow
these steps to connect an AC power cord:
Step1 Connect one end of the supplied PGND cable to the grounding screw on the rear panel of the chassis
and the other end to the ground as near as possible.
Step2 Insert one end of the AC power cord to the AC power receptacle on the rear panel of the chassis, as
shown in
Figure 3-14.
Step3 Connect the other end of the power cord to a power source.
Step4 Check whether the power LED on the front panel of the switch is ON. If the LED is ON, it shows the
power cord is properly connected.
Figure 3-14 Connect the AC power cord