Here we write some information about POE:
POE name in protocols IEE 802.3af
POE+ name in protocols IEE 802.3at
More informations here about standard POE.
Here you can read type of POE supported by unifi AP an Switch !
Hope this info will help you !
Posted from my blog with SteemPress : http://blog.rhce.ro/poe-and-poe-protocols-and-unifi/