2Turn the mouse
If you have an older mouse, you may need to press the plastic ring (rather than turn it) to disengage it.
If the mouse is locked, see the next section, “Locking and Unlocking the Mouse,” for instructions on how to unlock it.
3Turn the mouse
4Clean the three small rollers inside the mouse with a cotton swab moistened with water.
Rotate the rollers to clean all around them.
5Wipe the mouse ball with a clean, soft, dry, and
6If necessary, wash the mouse ball with warm soapy water (use a mild soap such as a dishwashing liquid) and then dry the mouse ball thoroughly.
7Gently blow into the mouse case to remove any dust that has collected there.
90Appendix A