3Com AP7760 Quick Start Manual page 10

Power Over Ethernet from a PoE Injector
To power the Access Point using the 3Com PoE Injector (included with the unit), do the following:
1
Connect the LAN cable from the switch or hub to the Hub/Switch port on the 3Com PoE
Injector (included with Access Point).
2
Next connect a LAN cable from the Ethernet port on the Access Point to the other port on
the PoE injector.
3
Plug the PoE Injector into a properly grounded electric outlet.
Access Point
To Access Point
To Switch/Hub
8
Switch/Hub
(non-PoE)