Specifications Product Name: Power Supply Tester Model #: KPST-02 Material: ABS Plastic Dimensions: : 3“ (L) x 2 3/4” (W) X 1 1/8” (H) Voltage Input: 20/24 Pin (ATX-Connector) Voltage Test: +12V, -12V, +5V, -5V, +3. 3V, 5V Stand By (SB) 12V, Power Good (PG) Connector Style: Floppy, HDD, CD-Rom, SATA, 4-Pin (P4), 8-Pin (Dual-CPU), 6-Pin (PCI-Express) Weight: 0. 20 lbs OS Support: Windows XP/Vista/7/8/10, Mac OS10x & Above Color: Black Robust Voltage Tester for PC Power Supply Test ATX Power Supply with Ease Accurate Voltage Indicator +/- 0. 1V (+12V1 / +5V / +3. 3V / 5VSB / +12V2 / -12V) Easy to Use, Plug-in Design Monitors Voltage Output Tests PC 20/24-Pin, PSU, ATX, SATA, HDD Essential Tool for Any Computer Technician Quickly Diagnose or Rule Out Problems with the Power Supply Prevent Electrical Disasters by Testing Your Power Supply Regularly