a cpu adapter is installed in a test machine for testing motherboards . the cpu adapter is capable of couping a cpu and a motherboard while testing . the circuit design of the cpu adapter can enhance the signals of the cpu and widen the clock signal thereof . the signals of the cpu can be transmitted to the motherboard to be tested correctly . instead of insertion and removal of the cpu manually , it can thus accelerate the testing speed , lower the hazard of damaging the computer component , and decrease the demand for test tools .