ITEM NAME:PC Computer 20/24 Pin Power Supply Tester w/ PSU ATX SATA HDD Connectors Description: - Checks 20/24-pin ATX (motherboard) Power, SATA (hard drive) power, Molex (old hard drive) power, Mini-molex (floppy) power, and 6-pin PCI-e (graphics card) connectors - Checks Ground, +3.3V, +5V, +12V, -5V, and -12V lines - Easy to use, just plug in connectors and green LEDs illuminate to show which pins are getting power - Power supply will automatically turn on when connected - It checks to the voltage on all wires to ensure that the power supply is functioning properly. This is an essential tool for any computer technician. Specification: - Size:Aoprox.88*60*20mm Package Included: 1 Piece 20 / 24 pin power supply tester for ATX / SATA / HDD SKU: QVW0019578263017203.Checks 20/24-pin ATX (motherboard) Power, SATA (hard drive) power, Molex (old hard drive) power, Mini-molex (floppy) power, and 6-pin PCI-e (graphics card) connectors. This is an essential tool for any computer technician.