Microsoft® Basic Optical Mouse Overview The Basic Optical Mouse lets you experience the speed, precision, and accuracy of Microsoft Optical Technology. Enjoy plenty of comfort and convenience, too, with a handy scroll wheel, customizable buttons, and either-hand operation. Additional Features Microsoft Optical Technology Get the fastest, most accurate mouse on the market. Optical Technology delivers unparalleled tracking speed and precise cursor movement. Either-hand comfort Work in easy, ergonomic comfort no matter which hand you use. Scroll Wheel Simply roll the wheel to move around in documents and Web pages—no more clicking the on-screen scroll bar. PC- and Mac-compatible The rectangular Universal Serial Bus (USB) plug connects to a Windows-based or Macintosh computer. The included IntelliType Pro keyboard software comes in a Windows or Mac OS version (Mac OS 10.1 to 10.1.3). System Requirements Microsoft Windows-based computers Operating System Microsoft Windows 98, Windows Millennium Edition, Windows 2000 Professional, or Windows XP Peripheral White: Available PS/2 or Universal Serial Bus (USB) portBlack: USB only System Requirements Macintosh computers Operating System Mac OS X versions 10.1 to 10.1.3 (excluding 10.0) Peripheral Available Universal Serial Bus (USB) port