Yahboom Ethernet POE Power Supply Module Board POE HAT Extension Board with Cooling Fan for Raspberry Pi 4B/3B+

Feature   1 PoE HAT 2 Support 802 3af PoE network standard3 Fully isolated switch mode power supply SMPS 4 37 57 V DC Class 2 device 5V 2 5A DC output5 25mm x 25mm brushless cooling fan delivering 6 25mm x 25mm brushless fan for processor cooling7 Fan control  Package Included   1 POE HAT  Raspberry Pi is not Included