Hello,
I just received my UC300ETH and the 5LPT motherboard along with the UCCNC software. I am installing it to replace a demo version of Mach3 in a 2014 Novakon Torus mill that has a Windows7 motherboard feeding a Novakon breakout board via parallel port.
The Novakon factory panel uses a 400 watt power supply to feed the Windows7 motherboard and the breakout board. This power supply has tons of extra leads and connectors, usually with both 5V and 12V available.
My question is where to safely obtain the 5V to power the UC300ETH. Can I simply use one of the spare leads from the power supply and grab the 5V and GND from there?