Features: PC Cordless 3-Button Scroll Wheel USB PS/2 Light and Dark Grey.Experience Logitech's best of breed RF cordless technology and award-winning design with the cordless mouse model R67. Now you can optimize your desk space with no cable to limit your movement; no line of sight issues associated with infra-red technology. The Logitech R67 Cordless Wheel Mouse works in a six foot range without being pointed at the computer. With Logitech's advanced digital radio technology, it performs even on desks crowded with cups, books, and piles of paper. The receiver plugs into a USB or a PS/2 port through an adapter, and the mouse itself will appeal to both right and left handed users due to its ambidextrous shape. All components - mouse; receiver; batteries & CD-ROM- are packaged in one individual white-box ideal for system integration.