I have a couple of case fans installed in the back panel of my cabinet for monitor cooling. What i'd like to do is run these fans (and probably the light in my Happs translucent trackball) off of a power supply separate from the PC's supply.
I have an old 235W ATX supply that i'd like to use. From what I understand, to get the supply to turn on, I short pin 14 (green) to any of the black ground pins. I'm not sure I understand how to turn it off though. Is it that once the short is broken, the supply turns off? Or should the short be momentary, and another short across those pins turns it off? And if its the former, is it safe to just solder the two pins together so the supply is always on when it's plugged in?
Also. I wish to have an external switch for the cab to turn on the PC (and everything else, via a smart surge strip). Could I wire both power supplies to the same switch, and what kind of switch do I need?
Thanks in advance.