The Dell Optical Mouse - MS116 features optical LED tracking and wired connectivity providing a stellar performance day after day. Improve your productivity at the office or at homenSimply plug the Dell Optical Mouse into any available USB port and get to work-itu0026#39;s that easy.nThe Dell Optical Mouse - MS116 features optical LED tracking and wired connectivity providing a stellar performance day after day. Improve your productivity at the office or at home-the Dell Optical Mouse will help keep you on task with accurate 1000 DPI optical tracking.