My job has me on the computer with intensive mouse use in technical programs 8 to 10 hours per day. I have battled mouse fatigue in my right hand and arm for years and had found the touchpad on my laptop to provide a nice left hand alternative to the right arm problems. I finally decided to try EasyCat external touchpad to provide a similar option for the desktop computers that I have to use. It works as specified and provides the relief I need. The only thing that might be better is to have a touchpad built into the left side of a keyboard, but I'm not aware of that option in any product. This works great so far.