Any updates on this?
I just want to thank AMD for 0 support and help with setting this up.
I went to best buy today and spent another 50 dollars on a USB to VGA adapter so that I could use my fourth monitor.
There should be no reason why I cannot extend my desktop to the fourth monitor using my R9 Fury X.
0/10 for support AMD. (I also filled out a support ticket and have received no response in over two weeks)