YueYueZou&reg; 20/24 4/6/8 PIN 1.8" LCD Computer Power Supply Tester For SATA,IDE,HDD,ATX,ITX,BYI Connectors LCD COMPUTER PC POWER SUPPLY TESTER FOR 20/24 4/6/8 PIN SATA IDE HDD ATX ITX BTX This power supply tester is the ultimate tool for all computer repair people. It comes with an 8-in-1 ATX power supply tester that outputs the voltage levels of your connectors to a 1.8 inch screen that is built into the device! You can accurately detect problems with power supplies and prevent damage to your motherboard. Will test 20, 24pin, 4-pin power, SATA, Floppy Power, PCI-e, 4-pin, ATX12V, and 8-pin connectors. Power on the supply of power, you will hear "DuDu" ring , if no flicker then the power supply output voltage is normal. Older model power supplies are easily tested on this power supply tester because it accepts the 20 pin atx connector and is able to detect the -5V circuit. As far as new power supplies go, this tester is up to the task because it can test 8 pin cpu, pci express, and sata. This power supply tester weighs only 3.5 ounces and is only 5/8 inches thick so it fits good in your toolbox. Features:Voltage Source 20/24 pin connector. 1.8 Inch Screen.Screen tells you outputted voltages for your connectors.