The Toshiba USB Optical Mouse is a full size mouse that is the perfect solution for the notebook or desktop user who enjoys using a standard size external mouse. This full-size mouse features an 800-dpi high resolution optical sensor and digital signal processor to read and follow your mouse moves, eliminating erratic cursor movement and the need to clean your mouse or mouse pad. These two features also allow the mouse to be used on virtually any surface where other types of mice might be rendered unusable. Low-cost, yet packed with features, this is an ideal mouse for the corporate environment. A true plug and play USB mouse; no driver software is required.