20Pin, 24Pin ATX power support SATA power support 4Pin, 8Pin P4 interface support PCI-E graphics card support 6Pin Power Connector Molex/Xeco Power Connector Support Floppy Drive Power Connector Support 4 Pin Standard Power Connector Support pins SATA connector The test voltages are as follows: +3.3V, -12V, +5VSB, +12V1, +12V2, +5V. Features: automatic PG alarm, LCD display for each volt. User manual p> Turn on 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 a circuit is not detected (for example, a 20PIN socket plugged into a 20PIN connector) or if the detected voltage is outside the normal range, the buzzer will emit a warning sound for a long time, and status display of voltage or the corresponding PG value flashes, then this power supply is defective! Specifications Voltage input: 20/40PIN (ATX power supply) Voltage detection: +12V -12V +5V -5V +3.3V 5VSB 12VPG Connections: 4pin(P4) 8pin(Dual-CPU) 6pin(PCI-E) COROM SATA hard disk Any voltage or PG problem with power supply will be alarmed and voltage value will be displayed .