8166 is a 5-port PoE extender which contents one lEEE 802.3af/at PD port and two IEEE 802.3af/at PSEports, This PoE Extender could be powered on by a PsE source and provides power to two PoE devicesat most, This PoE Extender is designed to extend the distance for both of data and PoE power to otherPoE devices. Therefore, 8166 PoE Extender could help to deploy PoE devices more flexible.