Mouse replacement: the cordless trackball Logitech

An alternative to traditional mouse: the Logitech Wireless Trackball.

T he trackball works like an upside down mouse: Laser sensors inside take the movements of the ball and make it available on a computer monitor the arm you do not move when using the trackball.. The connection to the computer, the device wirelessly forth across the “Unifying” receiver. he may remain permanently in the USB port of the computer by its small size. It is compatible with other devices Unifying Logitech ensures that you use the same receiver for keyboard, mouse or trackball at the same time. In October 2010, the Wireless Trackball M570 is for 69.99 euros in trading. (Dd)

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