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Title: Disappointed
Review: Purchased the Slimblade model and have had no complaints. Purchased this model for a friend and it was nothing but trouble and was returned. Tried to install it on a computer running Windows 7 and first it would not work at all. Windows tried to download the appropriate software and was unable. The trackball works software, located at their homepage, would not download(error messages such as unable to copy or unable to locate) hence I was constantly getting multiple error messages, one atop another, and constantly being told to reboot the computer.I'm not a tech. type, but I went into the program files found the related files and erased them and then tried the process again. No changes. Very frustrating. As mentioned product was returned.
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