Lenovo Optical 3-Button Travel Wheel Mouse Desktop Mailing Solution and features a dual ball

and features a dual ball bearing design that ensures reliable cooling and longer fan lifespan

A foil and double-braid shield protects against unwanted noise and interference

Works in Lexmark C54x and X54x

it's as simple as opening the front panel door

Lenovo Optical 3-Button Travel Wheel Mouse Desktop Mailing Solution and features a dual ballThis travel sized mouse uses optical technology for superior precision control (800dpi versus predecessor at 400dpi). It's a compact, lightweight, three button mouse, designed for ThinkPad customers who prefer a separate mouse. Plug and play USB interface for a quick and perfect configuration with Computer Optical LED for smoother movement and hassle free performance Scroll wheel provides convenient and easy navigation