In the past, the mouse driver was a small program, about 7 kilobytes or so. This is crazy . Anyway, the instructions are clear. The mouse works perfectly. Scrolling By using the scrollwheel, it becomes easy to move vertically through websites.
Many webpages are longer than one screen length.
Rather then use the elevator bar found on the right side of the screen, a few rolls of the wheel and the hidden portion comes into view. Often frames within websites must be scrolled. The mouse handles this deftly. The scrolling is not limited to websites. It works on all Windows applications.