The product was definitely helpful in easing my numbness and discomfort associated with my carpal tunnel syndrome. It was very comfortable to use and it required very little time to get used to. My only warning is about the quality of the product. The first unit worked well for about 3 months. I dropped it about a foot above my desk and it broke. So I bought a second unit right away. Unlike the first unit, the pointer was not precise (i.e., it jumped). Yes, the computer was the same and I did try all settings. I could not use the second unit. I went back to my standard optical mouse for awhile but my carpal tunnel has since worsened. I'm trying out other vertical/natural mice from other manufacturers.