CERRXIAN 20 Plus24 Pin Computer PC Power Supply Tester with LCD Screen for ATX/ITX/BTX/Floppy/HDD/SATA/CDROM Connectors-Gold-

The idea of preventing electrical disasters by regularly testing your power supply to determine problems before they damage your computer is the best option for rapid detection of PC power. Specification: 1.Voltage source: 20/24pin(ATX-connector) 2.Voltage text:+12v,-12v,+5v,-5v,+3.3v,5v stand by(SB) 12V power Good(PG) 3.Connectors:Floppy,HDD,CDROM,SATA,4 pin(P4),8 pin(Dual-CPU),6 pin(PCI-Express) 3.Characteristics: Beep Alarm when power supply was problem 4.Screen: 5.Support Indicator Light (+12V +3.3V +5V) NOTE: 4-lines of SATA connectors test +3.3V light does not light, only 5-lines of SATA connectors could be texted +3.3V Voltage. The Methods of operation 1.Plug power supply 24pin and P4,P6 or P8 into the corresponding jack of the power test suite. 2.Power on the supply of power,will hear "DUDU" ring,if no flicker then the power supply output voltage is normal. 3.If a certain voltage signal was not detected,or the detected voltage value over the normal,will issue a "DUDU" long buzzer; if the corresponding voltage value or PG flicker too,then the power is failed.