A socket connector includes a frame having a receiving cavity therein, a plurality of wafers aligned along a direction and received in the receiving cavity of the frame, and a plurality of contacts. The wafer is formed with a plurality of parallel slots located along at least one surface thereof and matched with corresponding slots of a neighboring wafer to constitute a plurality of receiving holes. The contacts are received in the receiving holes respectively. Each contact includes a top contacting section extending upwardly beyond an upper surface of the wafers and a bottom contacting section extending downwardly beyond a lower surface of the wafers.