How to find which version of macOS (OS X) you are using?
Before you purchase and install a Kaspersky Lab application, make sure your Mac meets system requirements.
For correct installation and performance, your Mac must be running OS X 10.6 or later.
To find the version number, in the OS X menu, click and select About this Mac (or About this Computer in OS X 10.6).
The information about the version will be available in the window that opens.