I've taken a PSU from an old Compaq desktop I had lying around and I wanted to turn it into a cheap 12V power supply to power my CB transceiver. However, on inspecting the PSU, I found that it had a 12.8V rail with 9A output. I have never heard of such a rail in my life and was wondering where this rail is located. The PSU doesn't seem to have any special connectors of any sort, so which wires are connected to the 12.8V rail and what is it used for?
I'd like to know, because 12.8V would be more than ideal for my purposes! Especially because it can output 9A. I found more questions and answers on the internet regarding this question but none seem conclusive.