Features: 100% Brand new and high quality! The power supply tester is a robust voltage tester for PC-power supply ATX . BTX and ITX compliant power supplies can be tested. LCD's indicate the status of voltage. Suitable for the ambitious hobby user as well as for a quick functional check in specialized trade. Plug power supply 24 PIN and P4 P6 or P8 into the corresponding jack of the power test suite. Power on the supply of power will hear "DuDu" ring if no flicker then the power supply output voltage is normal. 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. Specifications: Product type: PC 20/24 Pin ITX ATX BTX LCD Power Supply Tester. Interface Type: 20/24pin (ATX-connector). Voltage Test: +12V -12V +5V -5V +3.3V 5V Stand by (SB) 12V Power Good Connectors: floppy HDD CDROM SATA 4pin (P4) 8pin (Dual-CPU) 6pin (PCI-Express) Material: Plastic !#!amp!*! Electronics Dimension: approx. 96 x 62 x 20mm Color: Black Net Weight: 63g Package includes: 1 x LCD Power Supply Tester