Power Judge ATX Power Supply Tester w/Over Voltage Detection Power Judge ATX power Supply Tester w/Over Voltage Detection General Features: Over voltage detectio 20 + 4 pin power supply connector testing Suitable for 20 or 24 pin power supply F.D.D. / H.D.D. connector testing Voltage function indicator (+3.3v, -12v, -5v, +12v, +5v, +5vsb) Intelligent analysis indicator Helps prevent accidental damage to your computer Quick and easy method for testing power supplies