HDMI transfer both digital video data (image data) and digital audio data. And all that in one cable with a 19-pin mini plug. HDMI is downward compatible with DVI-D (Digital Visual Interface). Before the introduction of HDMI, this standard was the only widely available digital interface for video data.

    HDMI plug <-> DVI-D plug
    HDMI / DVI cable for connection of high resolution video equipment (HDTV)
    Data transfer rate up to 5 Gbit
    Best possible transfer characteristics from high quality, double shielded cable construction