Just got a new Mac Pro and 27" Thunderbolt Display. I have an OLD 20" DVI Cinema Display that I was using as a 2nd monitor on an iMac, via DVI to Mini Display Port adapter. I tried plugging the Mini Display Port adapter into thunderbolt ports directly on the Mac Pro, and on the Thunderbolt Display, but nothing's showing up on the Cinema Display and it's not showing up in Settings - Displays.
Is it possible to use the DVI Cinema Display on the Mac Pro, or is it just time to retire it?
