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Title: Useless in Windows Vista
Review: Having used this trackball and its predecessors for more than 10 years, I couldn't believe that Kensington no longer supports it with software for Vista. Believe it! Tech Support quote (05 June 2007):"There will be no Kensington MouseWork software support on windows Vista and there is no way to program the extra buttons of the mouse or trackball in Windows Vista." This invalidates just about all the features of the trackball, and you get no more functionality than you do with a mouse. Beware of the advertising for this product.
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