Referring to FIG. 1 to FIG. 5, the plurality of the conductive terminals 20 and the at least one ground terminal 30 are fastened to the base portion 13 and the connecting portion 14 of the main portion 11 of the insulating housing 10 and arranged in two rows. The conductive terminals 20 are transversely arranged in each row. And the plurality of the conductive terminals 20 are transversely arranged along the at least one docking surface 101. Front ends of the plurality of the conductive terminals 20 and the at least one ground terminal 30 project beyond a front surface of the main portion 11 and are exposed out of the tongue portion 12. The front ends of the plurality of the conductive terminals 20 and the at least one ground terminal 30 project beyond a front surface of the connecting portion 14 of the insulating housing 10. Rear ends of the plurality of the conductive terminals 20 and the at least one ground terminal 30 project beyond a rear surface of the insulating housing 10. The rear ends of the plurality of the conductive terminals 20 and the at least one ground terminal 30 project beyond a rear surface of the main portion 11. The rear ends of the plurality of the conductive terminals 20 and the at least one ground terminal 30 project beyond a rear surface of the base portion 13.