... New. Weight 81gSize ( about ) 12 x 6x 2 cmVoltage source 20/24 pin ( ATX - connector )Voltage test +12V , -12V , +5V , -5V , +3 ... in specialized trade.The methods of operation: Plug power supply 24 PIN and P4 , P6 or P8 into the corresponding jack ... tester 1 x English Manual PC LCD Power Supply Tester 20/24 Pin PSU ATX SATA HDD