20/24 Pin ATX PSU Power Supply Tester with LED Indicator, PC Power Checker Meter for Measuring 12V 5V 3.3V SATA HDD Computer Power Supply

This ATX power supply tester is a practical maintenance tool for PC builders, repair technicians and DIY enthusiasts to quickly inspect the working status of desktop computer power supplies. It supports both 20-pin and 24-pin main motherboard power interfaces, and also reserves a dedicated SATA HDD power test port for hard disk power detection.

Equipped with multiple LED indicator lights, the tester can visually display the real-time output conditions of 12V, 5V and 3.3V power rails. When the power supply outputs voltage normally, the corresponding LED will light up steadily; if there is insufficient voltage, open circuit or power failure, the light will not turn on, helping you judge whether the PSU is damaged efficiently.

The operation is extremely simple without complicated setup. Just plug the power supplys 20/24Pin main cable and SATA hard drive cable into the tester, then turn on the power supply. You can immediately check if each voltage channel works normally, avoiding motherboard damage caused by defective power supplies during assembly or replacement.

Small portable size saves storage space and can be put into repair tool bags conveniently for home PC maintenance, computer store repair and office equipment inspection. Made of sturdy plastic shell with stable internal circuit structure, it supports long-term repeated testing and is resistant to daily wear and tear.

It is widely applicable for testing ATX standard power supplies of desktops, industrial control hosts and small case computers, effectively preventing hardware burnout caused by unstable power output and greatly improving the efficiency of computer fault troubleshooting.