An electrical connector (100) for mating with a corresponding plug (200) includes a dielectric housing (1) defining two contact areas (15) along an up to down direction. An outer shield (3) encloses the dielectric housing. A plurality of contacts (2) are retained in the contact areas. An inner shield (4) are mounted between two contact areas and comprises a pair of spring arms (42) extending into the contact area to lock with the plug and a resilient strip (43) extending into the contact areas to abutting against an outer side of the plug.