Mac Pro (Early 2009) System
what is the latest system that can be installed on a Mac Pro (Early 2009)
Mac Pro, OS X 10.11
Question marked as
Hi Danny1052!
The official limit is El Capitan, however, you can easily upgrade the firmware from 4,1 to 5,1 and install High Sierra or even Mojave (if you have the right graphics card).
Theres's an article on how to upgrade your firmware from iFixit here.
Hope it helps!
-Geotrax
