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    Kensington Expert Mouse trackball

    Designed for PCs and Macs, the Expert Optical Trackball employs Kensington's DiamondEye optical technology for smooth, precise cursor movement. Surrounding the ball, is a Scroll Ring that puts scrolling right at your fingertips. Expert Optical Trackball even comes with a soft wrist rest-right.

    • All-day comfort from a world leader in trackball innovation
    • Uses far less desk space than a mouse
    • Optical technology delivers superior precision-no cleaning required
    • Ambidextrous design for left or right-handed users
    • USB and PS/2 connectivity for greater compatibility
    • Kensington 5-year warranty and technical support