3com S7906E Guide D’Installation Rapide

 

3-11 

 shows the rear panel of an external PoE power supply. 

Figure 3-13 Rear panel of an external PoE power supply (PSE2500-A) 

 

 

Follow these steps to connect the PoE power cables: 

3)  Remove the protection cover from the terminals which are used to connect the external PoE power 

supply. 

4)  Use a socket wrench M5 to loosen the fastening nut on the input terminal of the switch, and a 

socket wrench M8 to loosen the fastening nut on the output terminal of the external PoE power 

supply. 

5)  Connect the end marked with –48V OT of one delivered DC power cable to the NEG (-) terminal on 

the switch and screw up the nut. Connect the other end to the NEG (-) terminal of the external PoE 

power supply and screw up the nut. 

6)  Connect the end marked with GND OT of the other delivered DC power cable to the RTN (+) 

terminal on the switch and screw up the nut. Connect the other end to the RTN (+) terminal of the 

external PoE power supply and screw up the nut. 

7)  Connect the end marked with PGND OT of the grounding cable to the grounding screw of the 

switch and fasten the screw. Connect the other end to the grounding strip. 

8)  Remount the protection cover on the terminals. 

The console cable is an 8-core shielded cable. One end is a crimped RJ-45 connector, which is to be 

plugged into the console port. The other end is furnished with a DB-9 female connector. You can select 

either of them based on your actual requirements to fit in with the 9-pin serial interface at the 

configuration terminal. The following figure shows the console cable. 

Figure 3-14 Console cable