Mac Mini 2011 multiple-display compatibility
Throwing a small twist into the thread to detail what I've learned trying to add a 2nd screen.
I have a 2011 MM Server with a u2711 (2560x1440) attached via DP. Works great. However, I wanted a 2nd monitor since I can never get enough screen space for my work.
So, I thought it would be easy: buy the Apple 27" TB display, plug that into the MM and the Dell into it's daisy-chain port. Nope. I found a link
http://www.anandtech.com/show/4832/the-apple-thunderbolt-display-review/8 that explains the gory details of how Displayport runs over the TB cable.
The really strange part is that you can't plug a DP monitor into the 2nd port of the TB display - but - if you plug a TB disk drive into the monitor, then you can plug a DP monitor into that and it will work!!! Somehow, the TB chip in the disk drive extracts the 2nd DP video stream. Weird.
OK, more of a pain, but I guess I could sell my u2711 and buy two 27" TB displays. Nope. Found out that the Intel graphics in the MM Server can't support this. I would need the MM with the ATI card.
So, I'd have to sell the entire system and start from scratch! Think any of the sales-droids or even the Geniuses at an Apple Store know this? Not any I talked to.
Turns out the "cheapest" (not really a term normally used when talking about Macs) way to do this is get a 27" iMac. If you get a pre-2011 model, you can plug in a 27" monitor to the DP jack. If you get the current model, there are 2 TB ports and I've read several places that you can plug DP monitors into each, giving you a triple 27" screen computer.