Echnical question about HD3850 PCB

Hmm... interesting. I did a search and couldn't find an answer. My guess is it might be some voltage/ CrossFire settings? I have never used the 3850 so can't really tell (When the 3850 was out I used 88xxx cards).
 
Well i did notice that its not an all the cards referance or other wise and just to add that according to my board its a revision 3 card what ever that means.
I was wondering if it had anything to do with the Audio out and that kind of thing ?
Mactronix