Visiteurs depuis le 25/01/2019 : 4423 Connectés : 1 Record de connectés : 14 Dell Optiplex 990 Wifi DriversDell 990 Display DriverAfter completing the steps in this video you will have Mountain Lion on your Dell Optiplex 960 or any other.How To Install Mac OS X Yosemite On Any DELL Optiplex Part 1 Nick Silverstein. 760, 780, 960, 980, 990. Basically if you have a DELL Optiplex with a Intel Core 2