1For LGA1151: This desktop motherboard test card is suitable for Intel LGA1151 interface motherboard. 2Tester with Light: The 1151 tester with light is used to test the open circuit and short circuit of the main board CPU socket and the northbridge connection bus signal. 3High Safety: This desktop CPU tester adopt the method of light tube indication to replace traditional manual measurement method with a multimeter to prevent damage to the CPU during maintenance or debugging. 4Essential Tool: This desktop mainboard test card is an essential tool for maintenance and debugging of computer motherboards 5Please Note: Various signals of this tester, due to the different motherboard designs and chipsets of various manufacturers, some signals may be displayed differently, please debug and maintain personnel to use the same motherboard to judge the fault.