No ball. No cleaning. Incredibly smooth tracking. And you don’t even need a mouse pad. The Logitech Optical Mouse is based upon an optical system, making it a better design than other scrolling input devices. This use of optical technology provides smooth, accurate scrolling, without the need for a mouse pad (though it couldn’t hurt!). Because the Logitech Optical Mouse connects via USB and is designed for immediate plug-and-play connectivity, there are no software drivers to download or install. Just connect the Logitech Optical Mouse to any USB port, and you’re ready to browse the web, scroll through documents, etc. Trust Logitech for quality, reliable Input Devices—get the Optical Scroll Mouse for your PC.