Optical mouse with five buttons offers advanced optical technology for powerful control and accuracy, USB connectivity and built-in Microban antimicrobial protection. Microban fights the uncontrolled growth of damaging microbes, such as bacteria, that can cause product deterioration. The continuous cleaning action helps your input devices remain cleaner for the lifetime of the product. Optical mouse includes five programmable buttons with Fellowes EasyPoint software. Compatible with Windows 98SE, NT 4.0, 2000, ME and XP.