Logitech Trackman Marble Mouse -USB Port

Right or Left Hand Use. Track ball design provides long-lasting comfort.
Patented marble optical technology ensures smooth tracking
Convenient button controls let you easily move forward and backward when you are surfing the web.
Fingertip-based control enables fast, accurate cursor movements

Windows-compatible PC - Win XP or Win Vista;
USB Port; CD-Rom Drive
Macintosh System - Max OS X 10.3.9 or later
USB Port: CD Rom Drive