Features: PoE expansion board suitable for RPi 5, which supports IEEE 802.3af/at Networking standard. Suitable for use with PoE routers or switches supporting IEEE 802.3af/at Networking standards, and only one Networking cable is need to connect the RPi to the Networking and supply power. PoE Ethernet power supply is supported on RPi 40PIN GPIO. Support IEEE 802.3af/at PoE Networking standard imported IC scheme, PoE power supply performances is more stable power supply is small and easy to assemble. Internet of Things project developers and Networking engineers who need stable operating. Specifications: Component:ABS Size:Approx.6.48x6.50cm/2.55x2.56inch Package Includes: 1 Set Expansion Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.