Raspberry Pi Poe Ethernet Power Supply Expansion Module Supports 3B+/4B with FanDescription: This is a Power over Ethernet (PoE) mini expansion board for RaspberryPi3B+ 4B, supporting the IEEE 802. 3af network standard. If you already have a PoE router or switch that supports the IEEE 802. 3af network standard, with this expansion board, you only need a network cable to connect the Raspberry Pi to the Internet and provide power. Features: Suitable for RaspberryPi3B+ 4B, can be used together with the official Raspberry Pi shell,