I have been using the Kensington expert pro mouse for a couple of years now. I have recently purchased another version of the Kensington mouse and have decided to do a review on both of them.

This is the original Kensington expert mouse pro that I purchased a couple of years ago. The trackball consists of a large ball with four large buttons surrounding it. Each button can be programme to do different functions. Functions include, single click, double-click, right click and drag. There are also six buttons along the top of the trackball that can be programmed to open up programmes on your desktop, or websites. Using a traditional mouse can sometimes be difficult if you have limited or no finger movement. The software that is needed to set up these trackballs is excellent, very easy to understand and plenty of options to choose from so as to set up the mouse just to your specific .needs. I now look upon this mouse as an essential part of my computer equipment and really could not do without it any more. The trackball is well-designed and very easy-to-use. If placed correctly next your keyboard, you can use the computer without your arm or hand getting tired at all.

This trackball is manufactured by Kensington but comes in a different design. There is a difference between this mouse, and the original version. Firstly, there are no buttons to launch websites or programmes instantly. Secondly, there is a ring that goes around the ball which can be used to scroll up-and-down pages. This is an excellent addition to the mouse and should help people with very limited finger movement to scroll up-and-down web pages very easily. However, the mouse is a slightly different shape from the original and the ball is set higher. Because of this slight change in shape, and the fact that the actual ball is slightly higher, I found that after a couple of hours use, my wrist was aching. This is probably due to the fact I have been used to using the Kensington expert mouse pro.