All-day comfort from a world leader in trackball innovation. View larger Orbit Optical Trackball Navigate with greater comfort and precision while saving valuable desktop space with the Orbit Optical Trackball designed for both PC and Mac. Its optical technology delivers precise cursor control at the touch of a finger while the two-button design provides an interface that"s familiar to mouse users. View larger Optical sensing technology Provides precise tracking for superior accuracy while moving the cursor around the screen. View larger Space saver Uses far less desk space than a mouse so you can optimize the layout of your workstation View larger Ambidextrous design Works equally well for either right-handed or left-handed users. View larger TrackballWorks 2.0 Software Provides an even more personalized experience, giving you the ability to assign a wide variety of program functions to each of your buttons as well as control the pointer speed and scrolling. View larger Plug & play operation Quickly get clicking and scrolling with fast, simple installation through the wired USB connection that is completely reliable and intuitive. View larger Universal acceptance Compatible with both PC and Mac computers.