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"Item Description:\nUCTRONICS U6102 PoE HAT for Raspberry Pi is to use with the Raspberry Pi models with PoE pins like Raspberry Pi 3 Model B+ and Raspberry Pi 4 Model B, so you can power the Raspberry Pi with a single Ethernet cable plugged in.\nFeatures:\n\nStandard: IEEE 802.3at\nInput Voltage: 37-57V DC\nOutput Power: 5V (3A Max) / 12V (2A Max) via on-board terminal block\nPower Output: 20W Max (5V/4A)\nTotal power budget: 25W\nCooling: 25mm×25mm brushless fan\n\nPackage Includes:\n\n1× UCTRONICS PoE HAT for Raspberry Pi with cooling fan\n4× screws\n4× nuts\n4× standoffs\n1× manual\n\nNote:\n\nYou will need PSE (Power Supply Equipment) to supply PoE signal to the Raspberry Pi, such as a PoE switch or injector.\n\nAdditional Resources: \n\nUser Guide – UCTRONICS PoE HAT w/ cooling fan\nBlog – UCTRONICS PoE HAT w/ cooling fan\n"
<https://vilros.com/collections/raspberry-pi-fans>