Unlike the mechanical-trackball "mice of yore" that skip, stick, and need to be cleaned, the Microsoft TrackBall Explorer introduces an entirely new trackball featuring optical sensor technology. Reading through dirt, dust, and fingerprints, the optical sensor tracks the movement of the ball 1,500 times per second, giving you smooth, precise control. The Trackball Explorer comes with two additional buttons located on the side of the device--for a total of five buttons--for moving forward and back quickly in your browser, or you can program them. It also features a wheel for efficient scrolling and zooming and is ergonomically designed to support the natural position of your hand as you use your index finger to control the trackball. 

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 give you unbelievably smooth precise control. * IntelliEye optical technology for more precise and better control than an old-fashioned mouse with a ball. * Browse easily with the programmable forward and back buttons. Scroll efficiently with the wheel. * The shape supports your hand in a natural posture. The ball is positioned for fingertip control and easy navigation. * The IntelliEye sensor has no moving parts to clean so your trackball stays smooth and precise. 

About this item

Index-finger-controlled precision trackball design

IntelliEye optical technology

5 buttons--including 2 programmable buttons

Wheel for scrolling and zooming

Designed for use with the right hand