This is what the label says on the Elpac. But since Wayne did modifications to it I don't know if these figures are correct
Power Supply
For computer
Peripheral equipment
Model NO.: WM220.:--1950
Input : 115VAC 60 Hertz 0.40A
Output: + 5VDC 2.0A
+12VDC 0.5A
-12VDC 0.5A
Don't know if this will help but that's all the info. I have. It has a dedicated 3 prong power cord and two power supply wires to the Squeeze box
Cheers
Charlie