A Power Over Ethernet (PoE) expansion board suitable for Raspberry Pi 4B, supporting the IEEE 802.3af/at network standard. Suitable for use with PoE routers or switches that support IEEE 802.3af/at network standards, for Raspberry Pi 4B can be connected to the internet and powered with just one Ethernet cable. Based on the Raspberry Pi 40PIN GPIO interface, suitable for Raspberry Pi 4B. Supports PoE Ethernet power supply and IEEE 802.3af/at PoE network standard. Uses fully isolated switch mode power supply (SMPS). High-speed active cooling fan on board, equipped with metal heatsinks, accelerates heat dissipation together. PoE Power In: 37V-57V DC Input Power Out: GPIO Pins: 5V 4.5A (MAX) 2P Pins: 12V 2A (MAX) Network Standard: Supports IEEE 802.3af/at PoE Applicable for Raspberry Pi 4B Based on the Raspberry Pi 40PIN GPIO interface design, with a pin on the top for easy access to other expansion boards (Module only does not include the motherboard) Note: Due to different batches, there may be differences in product appearance and printed text, which does not affect the use. Color: Black Material: PCB+Metal Package Contents: 1 * PoE HAT(F) 1 * metal heatsink 1 * thermally conductive patch (3PCS) Only the above package contents, other products are not included.