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Since I am having some trouble with a battery pack and a charger I want to use for a home robotics project I got a tip to just use some alternative power source and buy a new battery and charger once my project has proceeded a bit. The alternate power source that was suggested was my PCs PSU. So I unscrewed my computer and got a lot of louse ends.

My question is now: from which ends can I take 12V?

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    \$\begingroup\$ It wouldn't have been a problem when you scaled these images down ;-) \$\endgroup\$
    – user17592
    Mar 29, 2013 at 18:22
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    \$\begingroup\$ A multimeter will give you a definite answer. It's good to have one around to troubleshoot other problems too. \$\endgroup\$ Mar 29, 2013 at 22:13

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Check out the pinout of a standard ATX power supply. You can take from the +12V pins. Note that I believe for most PSU you'll have to short PS_ON to COM if you want it to turn on outside of the computer.

[image removed due to a DMCA request by the copyright holder]

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YMMV but I'd use something like this

https://www.google.com/search?q=atx+bench+adapter

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Depending on how much power you need, the answer would vary, but the easiest place would probably be from the molex connector:

https://www.icmag.com/ic/picture.php?albumid=7678&pictureid=191268

This is mostly a legacy connector that isn't used much in current computers, and has nice, thick wires, allowing for easy access.

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