I have the late 2010 Mac Pro with the ATI HD Radeon 5770 graphics card. I have 2 Apple 24" HD Cinema Displays and one 720p HDTV. The Apple monitors use DVI and the TV uses HDMI only. I have one Apple Monitor connected via DVI to DVI, the second is connected via Mini DP to DVI Adapter to DVI, and the HDTV connected via Mini DP to HDMI Adapter to HDMI. I called Apple and emailed Apple, they said all three monitors should work with no problems. I can only get 2 of the 3 monitors to show. The Mac Pro only sees 2 of the 3. Is there an easy fix or do I need the Dual Link Adapter, if so why?