And some will work for particularly OS’s only. Mac has many different OS’s which means that there are many different CAC enablers. But don’t worry in this handy guide, we’ll walk you through how to install a CAC enabler for Mac and which one to choose. Often, you’ll need to install a CAC Enabler just for your Mac to recognize the hardware. When it comes to installing your new CAC reader onto your home computer, there’s a doubt that installing on Mac is much more complicated.