Logitech Trackball Buttons Won't Assign. The Logitech wireless trackball features programmable buttons that you can assign customized tasks to with Logitech's SetPoint software.

Some users have reported that they are unable to use the scroll button on their Logitech input devices as a "middle" mouse button after upgrading to the Logitech Control Center 1.6.2 software.

The Logitech Wireless Trackball M570 mouse provides a mixed feature set for the casual and gaming crowd coupled with a comfortable design.

Testing out the new Logitech M570 wireless trackball was both frustrating and liberating in that regard. For whatever reason, trackballs simply don't feel as accurate to me as a mouse.