Somewhat confused by the Thunderbolt/Mini DisplayPort compatibility rules, and the apple store people were unhelpful, so I ask here (maybe I should ask here first :) Hopefully we can come to a complete compatibility matrix.
I have a 27" iMac from December 2010 ("old imac") and another 27" iMac ("new imac") from July 2011. The first is MDP and the second is TB. I also have a MBP from July 2010 (which is MDP) and a MBA from August 2011. I would like to make a unified setup.
What devices can be used as monitors for other devices? For example, I know that I can use an MDP cable to connect the MBP to the old imac.