For your finger, it’s just a rubber wheel with a mechanical impact. The optical wheel is part of the scroll wheel in the upper middle of the screen. When you scroll down the page, the page or anything that can be scrolled up goes up a few pixels and it can be very annoying. It appears on PCs and laptops and is not exclusive to a particular version of the Windows operating system. The scroll wheel of the “Jump” mouse normally appears while the user scrolls down with the mouse. Update: Stop getting error messages and slow down your system with our optimization tool.