Rotate the rollers to clean all around them

2Turn the mouse upside-down and turn the plastic ring on the bottom counterclockwise to disengage it.

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 right-side up with one hand and catch the ring and the ball with your other hand.

4Clean the three small rollers inside the mouse with a cotton swab moistened with water.

Rotate the rollers to clean all around them.

124 Appendix A