Compatible with IEEE 802.3 afIEEE 802.3 atIEEE 802.3 bt ^^ One port supply IEEE 802.3 bt Ultra PoE input ^^ Four ports supply IEEE 802.3 at PoE output ^^ Extends the range of PoE and Ethernet an additional 100 meters ^^ Forwards both Ethernet data and PoE power to remote device ^^ No additional power supply is required ^^ Easy plug-and-play installation