Apple's macOS has a slightly different key layout than Windows. The Windows Start key is gone, replaced by an Option key, while Command keys replace the Alt keys. These differences are minor enough that virtually all Windows keyboards will work with macOS. Apple's operating system has a Keyboard Setup Assistant that will identify your keyboard and let you remap the keys to a more familiar layout. It's a simple process that takes just a few seconds. However, most modern keyboards use software to control their most complex features. This software isn't always available for macOS. Mac owners should check software compatibility before buying a keyboard.