ITEM NAME:PC Computer LCD 20/24 Pin 4 PSU ATX BTX ITX SATA HDD Digital Power Supply Tester Product Description Features: 100% Brand New. The power supply tester is a robust voltage tester for PC-power supply, ATX, BTX and ITX compliant, power supplies can be tested. LCD indicates the status of voltage. The PC / SPS is suitable for the ambitious hobby user, as well as for a quick functional check in specialized trade. The methods of operation: Plug power supply 24 PIN and P4, P6 or P8 into the corresponding jack of the power test suit. Power on the supply of power, you will hear "DuDu" prompt tone, if no flicker then the power supply output voltage is normal. If a certain voltage signal is not detected, or the detected voltage value over the normal, it will issue a "DuDu" long buzzer; if the corresponding voltage value or PG flicker too, then the power is failed. Specification: Weight: about 139g Size: about 12 x 6.5 x 1.5 cm Voltage source: 20/24 pin ( ATX - connector ) Voltage test: +12V, -12V, +5V, -5V, +3.3V, +5V Stand by (SB) 12V power Good (PG) Connectors: Floppy, HDD, CDROM, SATA, 4pin (P4), 8pin (Dual-CPU), 6pin (PCI-Express) Packet content: 1 x Power supply tester If you have any uncertainty or feel confused about the item, please feel free to.We will try our best to reduce the risk of the custom duties. Size: about 12 x 6.5 x 1.5 cm.