The logitech expands on the success of the trackman wheel to bring you the wireless M570, designed to keep you comfortable during all day use.
Another great thing about this wireless trackball is its tiny wireless receiver, the Logitech Unifiying receiver is very small and barely sticks out from the USB port. making it an ideal [...]

The good news for computer users searching for a Trackball optical mouse is that there are many good models available from different manufacturers giving you plenty to choose from. For example, Microsoft have a model called the “Microsoft Trackball Optical” and Kensington have the “orbit optical trackball” (links to these at the end of the [...]

The logitech Marble trackball is layed out more like a traditional mouse with the trackball located in the center.
It also has scroll buttons located on either side above the two main buttons. The Marble is suitable for both left and right handed users aswell as being compatible with PC and Mac. The forward center position [...]