The LCD displays various parameters such as output voltage and PG.When each parameter exceeds the normal value, the buzzer will sound a warning sound, and the corresponding value will flash This power tester only needs to be connected to the ATX connector of the power supply to easily and intuitively know whether the output of each power supply is normal. Can detect ATX, BTX, ITX, TFX computer power, and can display the voltage and PG value of each group of LCD, quickly detect the performance of computer power. It can measure the voltage of each group of the power supply 3.3V / + 5V / + 12V / -12V / SB + 5V / PG. If there is a fault, the buzzer will automatically alarm and the output wire P4 / P6 / P8 / SATA / IDE External DIE / SATA / P6 / P8 is light display, no LCD display voltage