As I understand it the MDP from the 5770/5870's have audio support. So does the cable from the new 27" LED display. Do MDP extension cables that can also carry the audio exist (e.g., is Atlona AT13032-2 such a cable)?
Alternatively, could one just use a non-audio MDP extension cable and USB? These are more commonly available and cheaper.
Alternatively, could one just use a non-audio MDP extension cable and USB? These are more commonly available and cheaper.