... ports in down line can be used as the data and power transmitting (POE port), ,each port matches IEEE802.3af standard, ... sever efficiency. The 16 ports simultaneously offer data transmit channels and supply power for routers, switches, wireless APs, IP phones, industrial network ... ,16 ports in down line are POE ports as data and power transfer)TX / RXAny of 32 portsLED DisplayPower ,UPLINK, Error, ...