Can someone tell me the way.....

[AMDGuy]

I need to hook up an ATX power supply to test a water cooling system, but don't want to plug it into a motherboard. Is there a way to get it to produce power without being plugged into a motherboard? I assume it's a matter of jumpering two of the pins together on the connector that goes to the motherboard, but I have no idea which ones to connect.

Thanks in advance.

[TT120]

Connect the green wire (the 4th wire from the left on the clip side of the MB connector) to one of the black ground wires right next to it. I start from the left and count 4 then count 3 more and connect those 2 together. That will tell the ATX supply to turn on.

[AMDGuy]

Many thanks!

[jboy]

Anybody know how to do this on an AT supply ?

[the_poche]

The AT psu dont need the mobo to power itself , just use the switch from the case or a similar one.