3Com 3C16895 7-slot Chassis manual Power Cord, Back of the PoE Rack, Front Panel of the PoE Rack

44CHAPTER 2: INSTALLING THE SWITCH 7750

Connecting the PoE Follow these steps to connect the power cord from the PoE rack:

Power Cord

1Loosen the mounting screw of the PoE terminal block on the rear panel of the switch.

2Insert the -48V OT terminal of the DC power cord to the NEG (-) terminal of the switch and fasten the mounting screw; insert the other end to the NEG (-) terminal of the external PoE power supply. See Figure 34 for a detailed view.

Figure 34 Back of the PoE Rack

1 PoE external power input: NEG (-)

2 (+) PoE external power input: NEG (+)

3 COM port (external power monitor)

3Insert the GND OT terminal of the DC power cord to the RTN (+) terminal of the switch and fasten the mounting screw; insert the other end to the NEG (-) terminal of the site power.

Figure 35 Front Panel of the PoE Rack

1 AC input socket

2 DC output terminal: NEG (-)

3 DC output terminal: RTN (+)

4 RS232 serial port

4Insert the PGND OT terminal of the DC power cord to the grounding screw of the switch and fasten the mounting screw; insert the other end to the grounding bar for the switch.

For detailed instructions on how to install the PoE rack, see the Switch 7750 PoE Rack Installation Guide.