The Adesso 3 button mini optical mouse is built with a retractable cable that allows you navigate quickly and easily with the convenient scroll wheel. It features optical technology to work on virtually any surface with better speed accuracy and reliability without hassle of a clogged mouse ball.Primary InformationInput Device Type : Mouse Connectivity Technology : Wired Buttons Qty : 3 Movement Resolution : 1000 dpi Interfaces : USB Dimensions&MiscellaneousWidth : 3.25 Inch Depth : 2.00 Inch Height : 1.00 Inch System RequirementsSystem Requirements / OS Required : WINDOWS 7/VISTA/XP/2000 Special FeatureRoHS : Y UNSPSC CodeUNSPSC Code : 43211708