Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great piece of hardware

This was recommended to me by a techie who was concerned about my carpal tunnel problems. It was not typing, but mousing that caused problems in my right wrist. This was a godsend to me. I read in other reviews that there are complaints about programming buttons. Users should be aware that updated drivers on the evoluent website have addressed many previous problems, and there are third party softwares that allow the buttons to be programmed any way one wants. Google will help you find them.I now own two of these for each of my workstations and highly recommend them.