The Genius NetScroll+ Optical is an optical mouse with a HP 800dpi optical sensor and a digital signal processor to read and follow your mouse movements much faster and more accurate. It¡¦s beneficial for Internet/on-line game and AutoCAD users who want to enjoy the quick responses by the enhanced 800 dpi optical sensor. These shapes won a National Award of Excellence in Taiwan and the metallic silver color matches our modern KB-21e Scroll keyboard, so you can put these two packages together and add some pizzazz to your desk.