LED Display - New 27 inch MiniDisplayPort to DVI

Hi all!
I know I may be a little foreseeing, but will the new LED 27 inch Display work with a single link adaptor DVI.
I have a Radeon 4870 HD gfx and I want to use this new display with my current 22 inch display that will use one of the two DVI ports on the card.

I have a 27 inch Apple Cinema Display and I am using an Altona DP400 adapter to connect it to my 2008 Mac Pro. The Mac Pro has a Nvidia 8800 GT graphics card installed and the ACD is acting as a second monitor.
I can confirm this solution is defective. The issues are:
1) There is no brightness control for the second monitor.
2) The second monitor does not power back on if power is interrupted. For instance, if I press the reset button on the Altona adapter, the monitor will not come back to life.
3) Several key combinations cause the monitor to switch into mirrored mode. I am not sure what they are (because I have trouble repeating them and type fast), but they are standard key combinations in the Eclipse IDE.
Trying to get this working, I have contacted Apple several times. Originally, they told me to purchase a mini-dvi to DVI adapter for the monitor, which did not work (obviously) because the monitor has a DisplayPort adapter. Apple failed to recognize this on the support call or when I visited an Apple store and explained what I was trying to do. The adapter they sold me cost $40 and had the wrong ports.
When I called Apple a second time, they turned me onto the Altona adapter. I ordered it, hooked it up, and have spent the better part of a day trying to get it to work. I attempted to adjust the monitor by resetting the Altona device, which has an onboard button for resetting. This turned the ACD off and there was no way to restart it without resetting the computer. I tried unplugging the ACD from the adapter, unplugging the adapter from the Mac, unplugging the USB from the Mac, it simply stayed off.
Given these issues, I would not recommend this monitor to anyone. I have replaced it with an older Westinghouse monitor as a secondary display for the Mac. The Westinghouse monitor has more defects, certainly, but it only cost $230 compared to the $1328 I have spent on the ACD solution.

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