If you have a dual monitor (or more) and a nMP on order you may want to plan out the display cabling. One of the advantages I was looking for with the nMP 6,1 was the ability to run multiple monitors at high resolution. In my case two 27" NEC at 2560 x 1440 each. The NEC's only have a DVI and Display port connection (Display port seems to be a bigger version of mini display port.) Since the nMP just arrived I used the cables I had at hand - one Mini Display port to Display port which works fine. I plug that into the MacPro TB connection directly, not at the end of a thunderbolt chain. The second cable I had was HDMI to DVI which I should have better checked out - its limited to 1920 x 1080. Its my understanding that DVI is the limiting factor. I didn't have any other mini DP cables handy (I live in the boonies) and also I want to utilize the HDMI port rather then use another TB port (I need them for external drives). To fix the display resolution issue, I now have a HDMI to Display port cable on order. Hopefully that should resolve this issue. Since I run the machine for fine art printing, I need supper accurate colour managed workflow thus the NEC's. After waiting two years for Apple to release this thing, I am still waiting for cables to make it work.