Logitech's best-selling optical mouse is now available to system builders! The Premium Optical Mouse combines the latest in optical precision from Logitech with full 3-button scroll functionality. No ball or moving parts means less maintenance; less cleaning. Glide smoothly across most work surfaces - no mouse pad required. Combo USB or PS/2 connectivity means the user can choose their port for more flexibility. Commercial brown-box package ideal for system builders, system integrators, OEMs, or Value Added Resellers.