A cable assembly comprises: a housing defining a receiving space; a metallic shell surrounding the housing; and a number of terminals arranged into two rows and received in the housing, each terminal defining a front mating portion and a rear terminating portion and a cable electrically connected with the plurality of terminals. The terminals are divided into several terminal groups, each terminal group comprises a pair of signal terminals and a grounding terminal located on different rows, two terminating portions of the pair of signal terminals and a terminating portions of the grounding terminal are arranged into right-angled triangular configuration in a vertical plane.