What It Does The Tenda Po E30G-AT is the IEEE802.3 AT Gigabit Po E injector, which fully conforms to the standard of wtih 802.3, transmitting power through Ethernet cable, the maximum transmission distance can reach 100 meters. The Po E injector has two Ethernet gigabit data ports & an output port combination of data & power. In addition, the device can be used for Ethernet device IEEE802.3af/ compatible Po E power applications such as wireless AP, Vo IP phone & web CAM. The power supply of Ethernet cable not only provides system reliability, traditional power grid expansion, but also simplifies the deployment of power lines. Main Features Po E ports supports IEEE802.3at & IEEE802.3af standard Equipped with gigabit port, blazing-fast tranfer rate, maximum transfer rate of up to 30W for single port Power distance extension of up to 100 meters for standard cat. 5e & cat. 6 Ethernet cable Plug & play, no any configuration required