Quick blog post here. Hooked up an Atlona AT-MDP21 2x1 Mini DisplayPort KVM switch to my 2009 Mac Pro and my 2010 MacBook Air. Both run the 27" Cinema Display at its highest native resolution, 2560 x 1440. Atlona documentation states highest resolution is 1920 x 1200. Easy to set up and I have the Cinema Display USB in the back working between the two computers. The only downside is the slight 1-2 second pause when switch the KVM from one computer to another. Not a big deal. Highly recommended.