I just purchased an ADC to DVI adapter (http://www.amazon.com/Apple-M8661LL-Display-Adapter-4038234011420/dp/B00011KHT2) and was looking to hook this up to my Xbox 360 since I had no other use for my 23'' Cinema display. It isn't currently working as the display currently is flashing on the power button and the screen is black. (I'm running my Xbox to a HDMI->DVI converter that I then plug into the converter's cable) If there are any fixes to this problem ANY help would be greatly appreciated! Thank you much! edit: Also, it works when I run the cable to my macbook and connect the ADC to DVI adapter to a DVI to mini-display port connector.