No user-serviceable parts inside? Give me a break! The head unit is tough to get to, but the PCBs within the chassis use ...

and moving the through hole components to the rear PCB side, pogo pins could be soldered to strategic locations. Building the assembly into a rudimentary enclosure made from sawn-up raw copper ...

It's a printed circuit board (PCB) with an array of components soldiered ... Older USB-A 2.x ports are powered by a 9-pin array, enclosed in plastic. USB-A 3.x require 19 pins and are essentially ...