ATX PSU each output connectors check Tests 20-pin and 24-pin power supplies Tests SATA power Tests Pentium 4 power connector Tests PCI-Express power connectors Tests Xeon power connectors Tests Floppy drive connectors Tests standard 4-pin power supply connectors Accurate voltage indicator +/-V(+12V1/+5V/+3.3V/5VSB/+12V2/-12V) ATX P.G value display. Lower or higher P.G values alarm Lower voltage detected alarm Over voltage alarm No voltage detected alarm