Product Description of Dell Mouse MS111 Black Wired Mouse With the 3-Button Optical Mouse from Dell. Ease-of-use and better reliability are assured. Because there are no moving parts to wear out or collect dirt and dust. Featuring 3 buttons, this mouse is ideal for Internet enthusiasts and gamers looking for programmability in mice buttons and fast, accurate response Supports: Windows Vista/XP/2000The compact size of this wired, three-button Dell Optical Mouse makes it the perfect notebook accessory. Optical technology delivers smooth, accurate performance on virtually any surface, and the wider scroll wheel lets you navigate through documents and web sites quickly and precisely.