I've got a MacBook with a broken LCD, so I pulled it off thinking the Mac would detect an external display via the mDVI port. However it doesn't detect the display at boot, only after the OS loads. Apple must have left something out of the firmware on this model, or there is a special key combination needed. Just a word to the wise, not that many people are still using these old Santa Rosa based systems. No great loss, I've going to order a new LCD for it anyway, I just found it odd.