This page is all about the meaning, abbreviation and acronym of ACU explaining the definition or meaning and giving useful information of similar terms. ACU Stands For : Aironet Client Utility, Automatic Client Upgrade, Access Control Unit, Array Configuration Utility, Automatic Calling Unit, Automatic Calling Unit.
APSL, BSD, GPL v2, and Apple EULA and NDA. Preceded by. OS X Mavericks (version 10.9) is the tenth major release of OS X (now named macOS), Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Mavericks was announced on June 10, 2013, at WWDC 2013, and was released on October 22, 2013, as a free upgrade through the Mac App Store worldwide.
These are instructions on how to update the operating system of your Mac to the latest version of OS X. If you aren't already on OS X 10.9 Mavericks you can upgrade for free by visiting this link. You can check your version of OS X by select About from the Apple menu at the top left of your screen.