Support ATX 20Pin, 24Pin power supply Support SATA power supply Support P4 interface 4Pin, 8Pin Support PCI-E graphics card 6Pin power connector Support molex/Xeco power connector Support floppy disk drive power connector Support standard 4-pin power connector SATA connector The test voltages are as follows: +3.3V, -12V, +5VSB, +12V1, +12V2, +5V. Features: PG automatic alarm, LCD display for each volt. How to use Turn on the power supply, while the sound drops two startup sounds, if the value of each group does not flash, it means the input power is normal. If the voltage signal of a circuit is not detected (for example, a 20PIN socket plugged into a 20PIN connector) or the detected voltage is out of the normal range, the buzzer will sound a warning sound for a long time, and the corresponding voltage or PG value display status will flash, then this power supply is faulty! Specifications Voltage Input: 20/40PIN (ATX power supply) Voltage Detection: +12V -12V +5V -5V +3.3V 5VSB 12VPG