The 3D Connexion SpaceNavigator 3D Mouse is a wired USB device which was designed for use with CAD programs, in addition to your regular mouse. However, it also works fine by itself.Except for some minor scuff marks on the tip, this unit is in great shape. No cracks or kinks in the wire.It has been tested on a Mac, but not a PC. It is plug-and-play ready for Macs. A Windows driver CD is included, as is the original box.Works great! Looks great! Priced to sell!