Motherboard Test Card Applicable To Motherboard Cpu Combo, The Motherboard Tester Is Designed To Quickly Test The Signal And Voltage In The Motherboard. It Can Be Used To Test The Open Circuit Or Short Circuit Of Bga And Cpu. Compatible With All 1151 Motherboards Please Know 1 Dual Processor Motherboard, When Using The 1151 Test Card, If The Battery Is Resting On The Drain Pin And The Indicator Light Is Off, The Positive And Negative Poles May Be Reversed. Please Replace The Positive And Negative Poles Of The Battery.