The PoE switch support IEEE802.3af/at POE standard, using advanced sensing algorithm, only for the terminal device which support the IEEE802.3af/at power over Ethernet standard, do not need to worry about damage to private standard PoE or non- PoE devices. Automatic recognition of PoE demand, speed, duplex and using the Auto Uplink cable, simple and convenient to use, no need to configure, plug and play. The PoE switch designed for commercial network, for example, some need to simplify the wireless access point (AP) and network camera installation based on IP. These away from the power socket device usually hung on the wall or the ceiling height. PoE eliminates the equipment specially connected with the power socket. The connection from the AC power supply equipment more flexible, simplified wiring, flexible and extensible, get rid of affection by power line layout constraints in family and office network. Design of high performance to price ratio, compact, flexible, EC series is the ideal chioce of small business network to economical use of PoE deployment of wireless access point (AP) and IP camera.