This
USB mouse features a high 800 DPI resolution in a small compact form. It's a perfect replacement if you're tired of the "tracking-ball" type of mice.
With optical mice, controlling your computer has never been so easy. There's no need to worry about cleaning your pad or checking your tracking contacts. You also gain the advantage of using this mouse on nearly any surface.
Each mouse comes with a USB to PS/2 adapter making in cross compatible with nearly any desktop or laptop computer. It's also 100% compatible with Windows 2000/XP/Vista and Mac OS X and higher. When it's connected to a computer, different red and blue LED's light up to give the mouse a great look and feel.