I got this Topower Zumax power supply at Microcenter. I usually run a burn-in test on new power supplies.
First I have to jumper pin 13 and 14 using the paper clip trick so that it will turn on when it is plugged in. I load one of the molex connectors with an old hard drive. Once it has run for a few hours, I clip and crimp the wires for pins 13 and 14.
Then I attach some right angle brackets for mounting into the cabinet.
I just use 1/2" hex screws and 51 cent brackets. I don't drill all the way through, just a little divot, and then power in the hex screw right in.