Onboard for 40PIN GPIO interface, convenient for access to for expansion board Onboard 10/100M adaptive Ethernet port, supports PoE Ethernet power supply Onboard 4-way USB interface, convenient for access to more USB devices Onboard 2-way camera interface, convenient for access to camera Onboard -compatible, interface, convenient for access to display Onboard USB TO UART, convenient for serial port debugging Onboard cooling fan interface, can be set to power-on operation or pin programming control Adopts fully isolated switch mode power supply (SMPS) Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Blue Material:PCB Package Contents: 1x PoE Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.