The official Power over Ethernet add-on board for the Raspberry Pi 3 Model B+. Use this HAT to power a Raspberry Pi B+ via an Ethernet cable! Features 802.3 af PoE standard Fully isolated switched-mode power supply 37–57V DC, Class 2 device 5V/ 2.5A DC output 25mm x 25mm brushless fan for processor cooling Fan control, fan only runs when necessary Compatibility For Raspberry Pi 3 Model B+ and Raspberry Pi 4 only. Included Raspberry Pi PoE HAT 10mm standoffs x 4