Since almost all components inside the mouse are screwed down to the bottom of the mouse, we will need to remove the top part.

1st. Let's put the mouse into an OFF position. [IMAGE 1]

2nd. Let's remove mouse feet. There are three of them on the bottom part of the mouse as seen in the picture. If you haven't purchased replacement feet, I recommend that you peel the mouse feet to the side only where the screws are located so you don't lose adhesion so they don't fall off during use or use glue to reapply mouse feet. [IMAGE 1]

3rd. We have to remove 4 screws as can be seen in the picture. Three screws are Philips 3 and one screw is Torx 6. [IMAGE 2]

After that, the top part of the mouse should pop right off with a little bit of force.