Franc Zabkar writes:

On Fri, 23 May 2008 14:54:32 +0200, put finger to keyboard
and composed:

This Compaq power supply was from 1998, I hope back then it was also
designed to cope with short circuits like the new one I bought now. I
suspect the red-black wires transport 12V supply, and the yellow one 5V (?).

A normal AT/ATX PSU has +12V on the yellow and +5V on the red. Be
aware that certain 3rd party PC manufacturers (eg Apricot)
intentionally wired these the other way around in an attempt to force
the user to buy replacement parts from them.

How many lawsuits did they have?

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