3D Printer EPS12V Power Supply Conversion

------PREFACE------
This document involves modifying the 12 volt power wires of your 3D printer. It assumes that you understand that mixing these wires up could cause irreparable damage to your 3D printer and likely void the warranty. The document was made using an Anycubic i3 Mega S but, with modification, can be applied to any 3D printer that runs off 12 volts DC. If you choose to do this you take your fate into your own hands, don't complain that I broke your printer.

------BACKGROUND------
I got tired of the noise and inefficiency of the standard power supply on my i3 Mega S so I decided it was time to replace it. Since the unit is 12 volts I decided it would be fun (read mad scientist) to convert it to run off the EPS12V, or CPU, connector of a PC power supply.

A quick PCB design later I had a simple 80x100 board that took the 8 pin, 336 watt, EPS12V connecter and combined it into a single +12 and COM rail with 4 blade terminals each, and with a quick rewiring job I was