I finally had to break down and replace my mid 2012 Power Mac since I could no longer update the OS. I was very concerned because I had set my MAC up exactly as I wanted it and didn’t want to have to redo all my settings and reinstall apps, etc. I couldn’t be happier! The time machine backup I had done on my old Mac worked absolutely seamlessly in just a couple of hours!And the new Mac runs sooooo much quicker that I’m thrilled. I’ve got it plugged into a 27” Viewsonic monitor and it looks awesome!So glad I upgraded!