mountain lion says it need an "early 2009 or later" mac mini. how do i tell if the mac mini i am working on is "early 2009 or later"? it doesn't mention that particular term in the system details. it's a macmini1,1 with a 2Ghz Core 2 Duo, 2GB RAM, GM950 GPU. currently got SL 10.6.8 on it.