Between my girlfriend and I we have three different display types. During the day, I often use your monitor when I'm working. I stupidly figured since the minidisplay port and thunderbolt ports looked the same they would be backwards compatible. I currently have a brand new Macbook Air, she has a mid-2010 Macbook Pro (mini display port), and I have a 2008 macbook (display port (I think)). Ideally, there'd be a way to plug these all into the new ACD thunderbolt I just bought with my MBA. If the 2008 macbook doesn't plug in that's okay because it'll be phased out. However, I'd like the MBP and MBA to be able to share the same monitor. What is the best thing to do in this case? Sell the MBP and buy a new MBP? Does apple have a quick/easy way to trade this in or sell it to them? The old MBP has an SSD drive in it so it is pretty speedy still. What would you do?