An adapter for providing a source of power to a mobile device through an industry standard port is provided. The transmitter inverts multiple bits of first transmission data, serializes the first transmission data to generate second transmission data, and provides the second transmission data to communication channels, in response to an error signal. A tubular sleeve is coaxial relative to the longitudinal axis in which the longitudinal support is displaceable parallel to the longitudinal axis and comprises a front end that is directed against the first connecting element.