Raspberry Pi GPIO header, for connecting sorts of Raspberry Pi HATs
10/100M auto-negotiation Ethernet port, with PoE enabled
4x USB ports, allows connecting more USB devices. 2x CSI camera interfaces
Onboard HDMI / DSI interfaces for connecting displays. Onboard USB TO UART, for serial debugging
Cooling fan interface, auto run on power up OR controlled by IO pins. Adopts isolated SMPS (Switching Mode Power Supply)
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