Quote Originally Posted by Chaz View Post
5V comes from USB, 12 - 24V - external PSU. Same BOB was used on my previous Emco lathe.
But there's 3 pins bottom right marked PC GND and 2 marked PC 5v I was wondering are these inputs? if so do they replace the usb? I'm going to run a 4 pin molex from the PC power supply so have bother 5v and 12v to tap would be neater than USB and possibly more reliable?

It's nice that the BOB came with not even one piece of paper lol I had to google around to find that image or what looks like my board.