Standard Raspberry Pi 40PIN GPIO header, supports Raspberry Pi 3B+/4B^^PoE (Power Over Ethernet) capabilityIEEE 802.3 af/at-compliant^^Fully isolated switched-mode power supply (SMPS) ^^While providing stable power for the Raspberry Pi, there's also a USB-A port for powering extra external device^^Onboard high speed active cooling fan, better heat dissipation