HDE PC Power Supply Tester 20/24 Pin PSU ATX SATA HD Test the power supply and avoid damage to computer equipments Compatible with ATX, BTX, ITX Voltage Test: +3.3V, +5V, +VSB, -5V, -12V and +12V Package Contents: 1 x PC Power Supply Tester HDE is a registered trademark and is the only authorized seller of HDE branded products