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Title: Kensington Trackball
Review: I have several of these trackballs (4 of them) and have used them for several years. I have found them to be exactly as specified by the Manufacturer and have never had trouble with them. Their ease of use is wonderful and they allow for proper control of the cursor at all times. One thing that I never found mentioned by the people that sell the trackball is that there is a ring around the ball that allows one to move the window slider up and down on the window you are in making it very easy to slide the window info on the screen as you wish during viewing. Jut place you thumb on the ring that is around the ball and move as you view. The set up for this track ball is seamless with windows 7 as well as XP and Vista. I recommend them highly.
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