Set is used to transmit TCP IP signal and power supply using one twisted pair cable. Connector for twisted pair cable: RJ45 socket (TCP IP and power supply). TCP IP data transmission: 1-2 and 3-6 pairs. Power transmission: 4-5 and 7-8 pairs. TCP IP Input / Output connector: RJ45 plug. Power Supply Input / Output Connector: 2.1/5.5 JACK socket / 2.1/5.5 JACK plug. Dimensions: W=190 H=21 D=21 mm. A set consists of two PoE adapters (input, output).