Negative Positive
Title: Beware Kensington does not support Win7 64bit OS systems for this trackball.
Review: If you can get the software to work correctly with this trackball... it is the best trackball I have ever used.I love this trackball and have been using it for many years. Unfortunately, due to Kensington's lack of support, this trackball may become nothing more than a paper weight. I have recently upgraded from WinXP Pro/sp3 32bit to Win7 Ultimate 64bit. When trying to install the Mouse Works software which is required, it no longer recognizes the Expert Mouse. The software just says there is no compatible device installed. After many days of searching and trying Kensington Support, I have found that Kensington is no longer supporting this product with a 64bit driver. There are several work-a-round fixes for the 32bit version of Win7 but, after trying fix after fix, I have not found anything for the 64bit version that will work.If you are running a Win7 64bit system, expect a headache trying to get this trackball to work!
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