What do I need to setup a 2nd display?
I went from a Mac Mini to an iMac 5K. The Mac Mini display was also my TV. Still using it as my TV, but would like to know what I'd need to connect it to the iMac 5K as a 2nd display. Also, by doing so, would I still be able to easily switch it from 2nd display to TV?
iMac with Retina 5K display, OS X Yosemite (10.10.2)