Features: 1.20/24 pin (ATX?connector) power supply tester support test floppy disk, hard disk, CDROM, for SATA, 4?pin (P4), 8?pin (dual CPU), 6?pin (PCI?Express). 2.Outputted voltages and PG value shows on the LCD screen, and designed with indicators, easy to read. 3.The power supply tester is a powerful power supply testing equipment, used for PC power supply ATX withstand voltage tester. 4.Can detect ATX, BTX, ITX computer power supply, it is the best tool to quickly detect computer power supply. 5.PC/SPS is suitable for aspiring users and quick function checks in professional industries. Specification: Item Type: Power Supply Tester_x000D_ Material: ABS_x000D_ Color: Black_x000D_ Voltage Source: 20/24 pin (ATX-connector)_x000D_ Voltage Test: +12V, -12V, +5V, -5V, +3.3V, +5V standby (SB) 12V power supply is good (PG)_x000D_ Connector: Floppy disk, hard disk, CDROM, for SATA, 4-pin (P4), 8-pin (dual CPU), 6-pin (PCI-Express)_x000D_ _x000D_ How to Use: _x000D_ 1. Plug the power supply 24 PIN and P4, P6 or P8 into the corresponding jacks of the power supply test kit._x000D_ 2. After turning on the power, you will hear a "DuDu" sound. If there is no flashing, it means that the output voltage of the power supply is normal._x000D_ 3. If a certain voltage signal is not detected, or the detected voltage value exceeds normal, a "DuDu" long buzzer will be emitted; if the corresponding voltage value or PG also flashes, it indicates that the power supply has failed. PackageList: 1 xPower Supply Tester 1 x Manual