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This digital LCD ATX power supply tester is designed to quickly detect and verify PC power supply performance. It supports 20/24 pin motherboard interfaces, 4 pin, SATA and HDD power connectors, perfectly compatible with mainstream ATX PSU. The high-definition LCD screen displays each group of operating voltages in real time, helping you easily judge power supply stability, abnormal voltage and hardware failure risks. Lightweight and easy to carry, it is an essential tool for computer assembly, maintenance and repair technicians.