The front ends of the plurality of the conductive terminals 20 are exposed out of the shielding element 40 through the opening 45. The front ends of the extending portions 22 of the plurality of the conductive terminals 20 pass through the plurality of the terminal grooves 124 and are exposed to the at least one docking surface 101 of the insulating housing 10. The front ends of the extending portions 22 and the contact portions 23 of the upper row and the lower row of the conductive terminals 20 pass through the upper row and the lower row of the terminal grooves 124 and are exposed to the two opposite docking surfaces 101 of the insulating housing 10. The front ends of the extending portions 22 and the contact portions 23 of the two rows of the plurality of the conductive terminals 20 pass through the two rows of the plurality of the terminal grooves 124 and are exposed to the top surface and the bottom surface of the second docking portion 123. The front ends of the extending portions 22 and the contact portions 23 of the upper row and the lower row of the plurality of the conductive terminals 20 pass through the upper row and the lower row of the terminal grooves 124 and are exposed to the top surface and the bottom surface of the second docking portion 123.