Hi Tom's Hardware forum. Because there is a D+ pin and D- pin on SD cards so information is written to one pin and read out of the other. Does this mean the video and audio are joined or mixed together to be written to one of the D pins then both video and audio which are mixed are read out of the other D pin? The video and audio are separated and amplified so the video can be displayed on the monitor and the audio can be heard from the speakers?