The Targus Ultra Mini Optical Mouse (Silver and Black with red LED) is just the thing for the mobile warrior that needs to save space when using an external mouse. At only 1.5 oz and 3 inches long, this Ultra Mini Mouse is great for any small workspace or on a small airplane tray. The Screen Scroller Button will allow you to scroll up or down, left or right the mouse and you can also alternate between open applications. It also allows you to browse Web sites and Windows easily.The Ultra Mini Optical Mouse conveniently comes standard with a USB connection (USB revision 1.1) that will allow true plug and play connection with the notebook USB port. And its 100% compatible with Windows 98/Me/2000/XP and Macintosh operating system right out of the box.