I gave up on the iMac wait and picked up a used mid-2011 with AppleCare. Eventually, I would like to add a thunderbolt display to it. However, in the short term, I have two 24" monitors I would like to connect to it. My understanding is that I can do this using the two thunderbolt ports on the iMac using two mini display port to dvi adapters. Now, if I later want to connect in a thunderbolt device, such as external hard drive, is there a way to do this, with both my thunderbolt ports already in use? Could I remove one display, connect the TB hard drive to the iMac, then connect the display with adapter to the other port in the TB hard drive? Do all thunderbolt ports in all devices have mini display port capability? My guess is no, but I thought it was worth asking.