I'm changing what was a five star review to one star for one simple reason. The mice that require this extension are garbage and do not work properly in many programs, especially Metro apps in Windows 10. Do yourself a favor. Get a real mouse that doesn't need this crap. I'm still using a Logitech, but now one that does not need this extension. This mouse (it's a track ball actually) works FAR better and scrolls much more accurately than the one that needed this. A mouse should just work properly out of the box and not need special addons to work in certain programs. Ditch your cheap piece of junk mouse and get a real one, then you won't even need this stupid addon.