Index-finger-controlled precision trackball designIntelliEye optical technology5 buttons--including 2 programmable buttonsWheel for scrolling and zoomingDesigned for use with the right hand
MODEL- D68-00007 VENDOR- MICROSOFT CORPORATION FEATURES- TrackBall Explorer- PS/2 & USB The TrackBall Explorer sets a new standard in trackballs by combining an IntelliEye optical sensor and an advanced ball design. The IntelliEye optical sensor tracks the movement of the ball 1500 times per second to
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