Digitally tests the connectivity and power voltage coming out from various vital PC power connectors

Tests ATX power supply connector from PSU, regular HDD/DVD power connector, and SATA power connectors

Displays results via the on-unit LED panel (labelled in English)

Full support list: ATX 24P/20P/8P/6P/4P/Floppy/SATA/HDD

User's guide included
The manual with the signal codes is written on the back of the package