A cable connector includes an insulative housing, some terminals, an insert and a shield. The insulative housing includes a main body, a pair of side arms respectively rearward extending from the middle of the two sides of the main body to form a receiving space between the two side arms. The forward section of said main body is a mating portion with some evenly disposed grooves. The rearward section of said main body is a connecting portion with some troughs corresponding to the grooves. Each side arm includes two pair of separated receiving slots on the tail thereof to be connected to the receiving space. Each of terminals includes a mating piece on the forward part thereof to be received in the mating portion and a connecting piece on the rearward part thereof to be received in the connecting portion. The insert includes a main body with a grid to form some passages corresponding to the troughs of the housing and two pair of fastening portions respectively extending from two sides of the main body. The main body of insert is received in the receiving space between the two side arms of the housing through said fastening portions being inserted into the receiving slots of the housing. The shield includes an upper cover assembled on the upper surface of the housing to cover the connecting portion and the insert, and a lower cover assembled on the lower surface of the housing to cover the connecting portion and the insert.