Based on Raspberry Pi 40pin GPIO interface suitable for Raspberry Pi 3B+/4BSupport PoE power over Ethernet support IEEE 802.3 af/at PoE network standardUsing a fully isolated switch mode power supply (SMPS) Onboard USB Type A interface while satisfying the stable power supply of the Raspberry Pi it can also supply power to additional external devicesOnboard high-speed active cooling fan for better heat dissipation