This converter allows a computer with a Mini DisplayPort output to be connected to an HDMI equipped TV, monitor or projector. It\'s ideal for use with older, first generation Macs that can not output audio through Mini DisplayPort as it includes a USB sound card and feeds digital sound into the HDMI output signal. It\'s perfect for watching the movies or video files stored on your computer on an HD Plasma or LCD screen. The additional USB connection transmits audio.