One of the best features of the new iMac is that the 27-incher can be used as a passive display via the mini DisplayPort. Unfortunately, that feature only currently works with other devices sporting the same port, which is virtually nothing. Not even Apple’s DVI adapter will work.

That’s not to say adapters won’t be supported later, it’s just a really great feature that, sadly, doesn’t work at launch. By adding the dummy monitor feature, Apple is essentially giving you a near-cinema display for just over half the price of a 30-inch monitor. Oh yeah, it also comes with a computer inside. But if you were thinking you’d hook that 360 up to your new iMac for extreme graphical sexiness, it looks like you’ll have to wait.