SEEWO OPS built-in PC module MT11 boot card

A PC module suitable for seewo whiteboard, which can be used as soon as it is plugged in. It has low cost and multiple functions (the power-on card on Taobao can only power on the computer, but this one has three USBs and one HDMI output). The material cost is less than 10 yuan
. There was originally a USB3.0 in the interface, but I couldn't use it after proofing and testing. There was a jumper on the circuit inside the machine that was not soldered. It still couldn't be used after soldering. Later, I used the USB tree software to see that there were only two U3 ports, corresponding to the two on the back panel, so I had to give up
. This module is also compatible with other modules of seewo with this interface, but some modules without their own power supply need to solder a wire to the "19V" place on the PCB network for an external 19V power supply.
Don't ask why only one USB port is equipped with ESD. That's because that port was originally used for the internal touch screen. There is no ESD circuit in the machine.
 
There is nothing else to say. I'll just complain about the differential wiring.