Before updating to mavericks
Audio calls require a microphone (built-in or external) and broadband Internet connection.
Video calls require a built-in Face Time camera, an i Sight camera (built-in or external), or a USB video class (UVC) camera; and broadband Internet connection.
This one is really going to be up to the specific user to decide, but if you like your Mac the way it runs now, it’s not a big deal to stay where you are.
Thus some of these Mac users may just want to stay put on the earlier version, assuming they know that by doing so they’re going to miss out on various new features, security updates, and compatibility with future versions of some apps.Requires an external storage device (sold separately).Learn more Supported by the following Mac models: Allows Boot Camp installations of Windows 10 on supported Mac models.When you upgrade to mac OS Mojave, you’ll get a host of new features inspired by its most powerful users but designed for everyone. Voice Over gestures require a Multi-Touch trackpad, Force Touch trackpad, or Magic Trackpad. Force Touch gestures require a Force Touch trackpad.