Excelllent product, takes the pain out of mousing
Due to cramping from using the mouse for hours, I decided to try the trackball to see if a different type of movement would help. It's great, no more problems. Just plug it in and it's good to go. You can use the CD to program additional functions, but I don't need it. This is a great product for people who are starting to develop problems from overusing the mouse for long hours at work or elsewhere. Highly recommended.
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