Introduction: How to Power Up an ATX Power Supply Without a PC!
In this instructable i will show you how to power up an ATX Power Supply without a PC.
Maybe in some cases you want to test an old CD-Rom Drive or something else.
All that you have is a PSU from an old PC an a wire.
Here I show you how do to it.
Step 1: Search!
Just look after the green wire in the cable tree from the PSU.
Follow it to the 20 or 24pin ATX plug.
The green cable is in a way the "reciever" you need to power up the PSU
Step 2: Connect!
Now it's time for the wire.
Bend the wire and close up the little green plug from the big ATX plug to any other BLACK plug. Cause the black is the ground. To come off best you should connect the green with black besides the green.
Your PSU should power up immendiatly!
You are done!
Use a thicker cabel for this. a standart one will cause a loose connection witch
isn't good for the PSU.
When you do this make sure that you have some device(s) connected to the PSU. Otherwise your PSU tries to drive the non-existing device an will overheat.
Step 3: Extra Options
Add a switch instead the wire!
simply bend 2 wires like I do in the pictures an stick them into the black and the green port of the ATX plug and the other ends into the switch.
Ready to go!
BTW: I'm German. Maybe my English isn't so good....
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I use this method to power my LiPo charger from an ATX supply also but if you want to get more juice from the 12v output than you need to load/stress the 5v output on it, otherwise can't give much Amps. Sorry for my bad english! So I ended up put a 12v 50w light bulb that used in cars attached to the 5v line (You can use a ceramic resistor too but with heatsink). Without the bulb my charger capacity was only 2,5-3Amps, with the bulb I can charge up to 6Amps. I hope it helps stg!