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The Orbit Trackball with Scroll Ring from Kensington is a desktop trackball with a USB interface. It features a symmetrical design, making it easy for both right- and left-handed users to operate. Optical tracking technology and a scroll ring make it easy to move your cursor and scroll through web pages. It is compatible with Windows XP, Vista, 7, and Mac OS X.
All-day comfort from a world leader in trackball innovation
Scroll ring allows fast, easy scrolling of web pages and documents
Uses far less desk space than a mouse
Optical technology for precise tracking -- no cleaning required
Symmetrical design for left-handed or right-handed handed users