A cable connector assembly (100) comprises an insulative housing (1), a plurality of contacts (2), a metallic shell (3) enclosing the insulative housing and a spacer (5). The insulative housing includes a first tongue (121) and a second tongue (122). The contacts comprise a plurality of first contacts held in the first tongue and a plurality of second contacts held in the second tongue. At least one of the contacts comprises a main body (2210), a pair of horizontal soldering portions (2212) and a pair of connecting portions (2214) the cable has a group transmitting high speed signal, and the group of cable defines two grounding wires (623) connected with the corresponding soldering portion.