Anycubic I3 Mega USB Cap

Cap for Anycubic I3 Mega USB port.

I included a Raspberry PI and a 12V -> 5V DCDC converter (e.g. Amazon https://www.amazon.de/gp/product/B019GX3YP4/ref=oh_aui_detailpage_o07_s01?ie=UTF8&psc=1) in the printer base.

The USB port is internally hardwired to the RPi with a soldered USB cable.
Pinout of the USB pads on the motherboard:

Rectangular pin is 1 and then counterclockwise:

1 - USB 5V red
2 - USB D- white
3 - USB D+ green
4 - GND black

This cover closes the hole of the un