An electrical cable connector comprising an electrically conductive central body, an outer sleeve rotatably coupled to the central body, and a tubular cam member disposed between the outer sleeve and the central body. When the outer sleeve is rotated around the central body from a first rotational position to a second rotational position, the tubular cam member is displaced from a first axial position to a second axial position, thereby causing a radial camming region in an axial through bore of the tubular cam member to displace fingers of the electrically conductive central body radially inwardly. In that manner, when the connector is plugged into a port or jack comprising a cylindrical body that is at least partially enclosed by the fingers of the central body of the connector, the fingers clamp onto the body of the port, thereby securing the connector to the port.