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Apevia's LCD Power Supply Tester allows fast and easy test for your power supply. Pocket size with a LCD screen to show all the ATX power voltages on +12V1/+5V/+3.3V/5VSB/+12V2/-12V and P.G. With alarm warning any abnormal voltage, this power supply tester is one of the best in the market. Just connect the 20-pin or 24-pin main connector from the ATX power supply to this LCD power supply tester and plug in P4/P6/P8 to show the voltage on the screen. Made of quality aluminum material, this power supply tester helps you easily diagnosis the problem source and prevent possible damage to your system. It's a small investment for a "must have" tool for pc builders. -Easy to use ATX power supply tester with LCD screen -Check eact ATX power supply connector -Accurate voltage indicating +/-0.1V or +12V1/+5V/+3.3V/5VSB/12V2/-12V -P.G. value display -Lower and higher P.G. values alarm -Low voltage alarm -Over voltage alarm -No voltage alarm