An electric connector includes an insulating housing having a base board, two side boards, a top board and a bottom board which define a receiving space thereamong. A terminal body protrudes rearward from a rear surface of the base board in the receiving space. A plurality of probe terminals is assembled in the insulating housing. A magnet unit includes a plurality of magnets stood together to show a shape matched with the receiving space of the insulating housing for being assembled in the receiving space. A metal shell is mounted to the insulating housing to enclose the insulating housing and the magnet unit. The metal shell further electrically resists against rear sides of the magnets to secure the magnet unit in the insulating housing.