Base PoE is an M5 Base that implements a W5500 Ethernet controller chip with PoE module, which provides Hardwired TCP/IP embedded Ethernet control to facilitate easier internet connection to embedded systems. W5500 integrates TCP/IP protocol stack, 10/100M Ethernet data link layer (MAC) and physical layer (PHY).This base supports RS485 / RS232 communication and can be used as an Ethernet to serial port server. It is specifically designed for industrial applications. PoE (Power over Ethernet) technology is supported. Through the built-in PoE module, power can be directly supplied to the base through PoE hub / switch without a separate power supply. It comes with a couple of HT3.96 connectors, metal rail and magnet discs for easy installation. The 6 pins of the HT3.96 connector are spare, you can wire them up with an RS485 or RS232 adapter board as you like.