The PoE HAT (C) is a 802.3af/at-compliant Power Over Ethernet accessory for the 3B+/4B. By using this small HAT and some proper 802.3af/at-compliant power sourcing equipments, it is possible to provide both network connection and power supply for your in only one Ethernet cable While providing stable power for the , there's also a USB-A port for powering extra external device, Onboard high speed active cooling fan, better heat dissipation Fully isolated switched-mode power supply (SMPS). POE input voltage: 37V ~ 57V DC input, POE-USB Type A output voltage: 5V 4A (MAX), POE-Pin header output voltage: 12V 2A (MAX), Network standard: Support IEEE 802.3af/at PoE. While providing stable power for the , there's also a USB-A port for powering extra external device Product size: 56.5 x 65mm color:Blue Material:PCB Package Contents: 3 x PoE HAT (C) 3 x Standoffs pack Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.