http://store.apple.com/us/product/MB571Z/A/mini-displayport-to-dual-link-dvi-adapter What is the USB plug used for?
I have a Mac Pro (2008 eight core 2.8 GHz), a MacBook Air (mid-2011 Core i5 1.7 GHz), and a 30" Apple cinema display (maximum resolution 2560x1600). I have a mini displayport to dual-link DVI adapter ...
I have a Mac Pro with a DVI display, and I got a new DVI display for it. I want to unplug the (only) display, and plug in the new display to that DVI port. And/or, unplug the existing display, and ...