Passive 48V PoE power supply, support gigabit ethernet. In this case power and ethernet loops exist on this same and all eth cable wires. Adapter is not compatible with active 802.11af standard.
Fits very well for supply device which support both or only passive PoE supply like RouterBoard RB800 and ntellus IP2 (JA76PA2) board from JJPLUS  (available in our offer).