This is PC 20/24 pins PSU ATX BTX ITX SATA HD power supply tester. With this item, you can easily detect ATX, BTX, ITX computer power supply and prevent your computer from accidental damage. It is easy to use-just plug it to your power supply and you can know the actual status of the power supply. Fast and easy to use to check on your power supply voltage. ++Product Features: # Test your power supply and avoid damage to your computer equipment. # Compatible with ATX, BTX, ITX. # Green indicator lights. # Easy to use: just plug it to your power supply connector. # +3.3V, +5V, +VSB, -5V, -12V and +12V LEDs for monitoring voltage output. # Dimensions: 3.6" x 2.4" x 0.8" (9 x 6.2 x 2 cm). # Weight: 3.3 oz (92 g) ++Specification: #Device Type: PC 20/24 pins PSU ATX BTX ITX SATA HD power supply tester. #Voltage source: 20/24pin (ATX-connector) #Voltage test: +3.3V, +5V, +VSB, -5V, -12V and +12V #Connectors test: floppy, HDD, CDROM, SATA, 4pin (P4), 8pin (Dual-CPU), 6pin(PCI-Express) ++Package Includes: # 1x PC 20/24 Pins PSU ATX SATA HD Power Supply Tester. This is a must have item for any Computer Technician. Anyone interested can email me. Thanks for reading. Visit my online store for new apparel,jersey,purse,wallet,shoes, electronic,computer/cellphone/camera accessories, aquarium accessories and more at good deal For direction you can check out with the map below.