A mounting device for mounting a connector (30) to a panel (10) includes a shield (20). The panel defines a plurality of slits (15) and a hole (13) therein. Each slit defines a wide portion (151) and a narrow portion (153) communicating with the wide portion. The shield is adapted to receive the connector therein. The shield forms a plurality of hooks (25) and a rivet (26). The hooks extend through the wide portions of the slits, then slide to the narrow portions to engage with the panel. And the rivet extends through the hole to be riveted to the panel to firmly secure the shield with the connector to the panel.