An electrical connector assembly mounted on a printed circuit board, includes a socket and a connector. The socket mounted on the printed circuit board, has an insulative housing with upper body and lower body formed with a receiving room. A number of contacts respectively received in the upper body and lower body with a same structure. The contacts have spring portions extending into the receiving room and soldering portions extending beyond the upper body and the lower body. The connector is mounted on the printed circuit board. A linking element mechanically and electrically connects the socket and the connector.