Microsoft Hardware Pack delivers value in a wired keyboard and mouse package combines a sleek black design that complements many of the latest PCsFeatures integrated zoom slider and Favourites keys for one-touch access to frequently used intranet sitesAs part of the Business Hardware Pack, Microsoft IntelliMouse Optical in black provides enhanced performance and comfortMicrosoft Optical Technology works on virtually any surfaceCompatible with Windows 98/SE/ME/2000/Vista/NT4/SP6 or later/XP Pro; Mac OS X 10.1-10.3