Ok, I've seen the old "jump the green wire to ground" question on here a million times, but I want to use an old PSU as a 12v/5v source for my circuitry projects, but the trick is that it's an AT. Or at least I think it is. I don't know for sure, because in all honesty I haven't been tearing computers apart since the AT/ATX switch, so I don't know the difference. It's old, it's low wattage, and it's got a signifcantly different array of connectors on it, but most importantly there's no green wire on the 24-pin connector. If I were going to guess, I'd just jump pin 14 to ground and fire it up, but I figured it might be better to ask first. Anyone done this with an AT PSU?

AT's dont need to be jumped, it must have an on/off switch at the end of a long wire with 4 wire inside.
Just plug something in a 4 pin molex and it will start with the on/off.
It's what i use on my bench, a 200W, they're good to test things and what not

Edit: oops AT's dont have a 24 pin connector loll, just two small AUX like flat ones

RE Edit: i saw old big ATX ones without green wire, but the pin 14 whatever the color is the one to jump

Yup, on an AT, the power switch is hardwired into the PSU itself, they make much better aux. PSU's.

yup i have even seen one that had a hard plastic rod going from the front of the case to the back to push a button on the psu to turn it on and yes i am speaking of AT psu's

i had one of those, what trouble peoples got into just to make the case look nice