[SLL] Hot-wiring an ATX power supply?

[Rob Smith]

On Jan 18, 2008 10:23 AM, Ralph Sims <ralph at sims.cc> wrote:
>
> I have a computer whose BIOS does not have a feature to resume after a
> power-off (a Linux router).   I need a reference to show me which leads on
> the 20-pin ATX connector to jumper to put the power supply in "always on"
> mode.

http://wiki.xtronics.com/index.php/ATX_Pinout

You want to short pin 14 (PS-ON) with a ground, and then remove the
short and it'll turn on. it's not just a simple jumper. It's two state
changes (short + removal of short).