I have been an OSX user for long, and today while using a scroll mouse I realized in Mission Control it gives us option to choose from Secondary Mouse Button to Mouse Button 11.
If I press the scroll wheel then it is the 3rd button of the mouse. I wonder which mouse or has more than four buttons.
They certainly exist. And even 11 buttons isn't the maximum that are sold.
Look at the Razer Naga with 17 buttons for example.
There is. It's used for gaming, fast editing text and more. For example you can assign all keys to bold, italic or underlined text etc. It could bring you good productivity.
Anker 5000 DPI Precision Laser Gaming Mouse is one of them.
Several gaming mice have 11 buttons:
and several models have 10 (e.g., Sensei Wireless Gaming Mouse, Logitec G500)
One thing to keep in mind is that not all 'buttons' are actual buttons. Instead, all mouse actions - including scrolling up and scrolling down - are seen by the computer as buttons. Thus, a standard mouse nowadays (which comes with left/right buttons and a clickable scroll wheel) already has five buttons.
Along those same lines, certain mice have scroll wheels which can be pressed to the left and two the right, which makes a single physical controller be in charge of five logical buttons.
4-6 buttons are pretty common. (Extra side buttons operated by the thumb.)
Gaming mice and special mice/track-balls/3D controllers for CAD purposes can have many more.
The buttons are not necessarily on the mouse itself. I have also seen some (mainly track-balls and 3D-controllers) that had a separate button-pad.
