PC Computer LCD 20/24 Pin 4 PSU ATX BTX ITX SATA HDD Digital Power Supply Tester Test your power supply and avoid damage to your expensive computer equipment with this ATX power supply tester. Simple and easy to use, no batteries are needed. Connect to the power supply's 20-pin Molex connector. Equipped with +3.3V, +5V, +VSB, -5V, -12V and +12V leads for monitoring voltage output. Product Features: The power supply tester is a robust voltage tester for PC-power supplies. ATX . BTX, and ITX compliant power supplies can be tested. LCD's indicate the status of voltage The PC / SPS is suitable for the ambitious hobbiest, as well as for a quick functional check in a special trade Plug power supply 24 PIN and P4, P6, or P8 into the corresponding jack of the power test suite Power on the device, you will hear a "DuDu" sounding ring , if there is no flickering with the device, then the power supply output voltage is normal If a certain voltage signal was not detected, or the detected voltage value is over the normal, you will hear a "DuDu" long buzzer ; if the corresponding voltage value or PG flickers as well, then the power has failed TECHNICAL SPECIFICATIONS: Test the power supply and avoid damage to computer equipment; no batteries needed Compatible with ATX, BTX, ITX Voltage Source: 20/24pin (ATX-connector) Voltage Test: +3.3V, +5V, +VSB, -5V, -12V and +12V Size: 4.75 x 2.5 / 12.07cm x 6.35cm; Color: Black