A connector includes a main body and a detachable module. The main body has an insulation base and a plurality of pin header slots. The rear surface of the insulation base is provided with a plurality of troughs. The pin header slots are disposed in the troughs. Each pin header slot extends toward the top surface of the insulation base. The detachable module includes a circuit board, an integrated circuit and a plurality of pin headers both electrically connected to the circuit board. When the detachable module is assembled with the main body in such a manner that the pin headers are electrically connected to the pin header slots, a mother board connected to the main body can perform the functions of the integrated circuit of the detachable module.