A cable assembly comprises a housing defining a first cavity, a second cavity and at least one third cavity extending rearwardly from a front surface thereof, each third cavity communicated with the first cavity or the second cavity. At least one first and second electrical connector are respectively received into the first and second cavity, each first and second electrical connector defines a metallic shell thereof. At least one first cable and second cable electrically are respectively connected with the first and second electrical connector. At least one plastic piece assembled with at least one grounding piece is received into each third cavity, the grounding piece contact with the metallic shell of the first or second electrical connector. A shielding member is assembled to the housing and contacted with the grounding piece.