Personal Iris Power Supply Rescue

 General Information


My newest Personal Iris 4D/35 doesn't work because it has a broken mainboard, but it also has something very special: One of the previous owners installed a standard 450W ATX power supply instead of the original power supply. And the best is: After I changed the E-Board, the machine works!

Pin Layout

The original SGI power supply has the following pin layout:

Signal Colour Pin No
+5V white 1,4,7,10,13
GND green 3,6,9,12,15
+12V orange 2
-12 brown 5
SENSE+ red  
SENSE- black  
PFD blue  

SENSE+, SENSE- are used to control the voltage, while PFD is for power failures. You can simply ignore these, as ATX power supplies have their own voltage regulator.