Maintenance of Mouse.

  As you move the mouse on a flat surface the ball turns the rollers inside and send signals to the computer. The computer then translates these signals into the movement of the mouse pointer.

  For this reason it is important to keep the rollers inside your mouse clean. Any piece of dust/debris no matter how small can make your mouse behave abnormally.

• Firstly, unplug your mouse from the PC and get a soft tissue and suitable cleaning fluid.
• Notice the removable cover on the bottom of the mouse.
• Turn the mouse cover anti-clockwise to release the ball, remove the cover and take the ball out.
• Use soft tissue to clean the mouse ball, be sure to remove all dust/air/debris.
• Next, notice the 3 rollers within the mouse casing, these are what we need to clean. 
• You can improvise on how to clean the rollers, using your fingernail gets good results. If the mouse has not been cleaned before then you will see lots of dust on the rollers, whichever way you choose to clean them.
• Make sure,you remove all traces of dust/debris as the smallest piece can cause the mouse to behave erratically.
• When you have removed all trace of dust/dirt from the rollers and the ball is nice and clean. simply put the ball back in and replace the cover turning clockwise to lock it in place.
• Plug the mouse back into your machine and switch the PC on. Now your mouse should be as good as new.

  The optical mouse replaces the mouse ball with optical sensors that track the movement of the mouse over a surface. The fact that it dose not need to be cleared internally is the biggest advantage that an optical mouse has over conventional mouse.