Ubiquiti Networks airFibe5X - Manual (Page 20)

3. Connect the other end of the cable from the DATA port to
the Ethernet port labeled POE on the airFiber PoE Adapter.
WARNING: Use only the included airFiber PoE Adapter,
Model: GP-H240-100G-4. Failure to do so can damage
the unit and void the product warranty.
4. Connect an Ethernet cable from your network to the
Ethernet port labeled LAN on the airFiber PoE Adapter.
5. Connect the Power Cord to the power port on the airFiber
PoE Adapter. Connect the other end of the Power Cord to a
power source.