ATX power supply panel

# ATX power supply panel

A simple top mounted panel for re-using a discarded ATX computer power supply unit as lab bench power supply.

I used the outside wires from the long ATX connector which go to the banana terminals and did not need to open the case. I also left two 4-pin "P4 connectors" in case I want to connect any PC hardware (fans, drives etc) later.

The panel is 150mm wide which seems to be a standard size, but yours might be different. The same applies to the srew holes which hold the panel on top of the power supply.

Regarding the wiring, refer to the many available tutorials online (instructables etc).
This is just a short summary :
Common ATX connectors have 20 or 24 pins. The color coding is standardized (see chart).
After the power supply is switched off and completely discharged, cut the wires from the connector, group them and solder to the terminals as shown below :
Yellow: +12V
Red: + 5V
Orange: +3.3V
Black: 0V (GND)
White: -5V
Blue: -12V