A socket assembly includes a base and a number of sockets. The base includes a bottom wall and two sidewalls. A conductive base is formed on the bottom wall and forms at least two conductive pieces parallel to the sidewalls. An extension plate extends from the top of one of the sidewalls toward the other sidewall. A number of cutouts are defined in the bottom surface of the extension plate. Each socket includes a main body and a fixing member mounted on the top of the main body. The manipulation of the fixing member allows the repositioning of a socket within the base, or the removal of a socket.