Remove the two 4.5mm screws from the center of the keyboard.

Remove the single 18mm screw from the middle securing the copper bracer and metal bracer arm. Remove these and set aside.

Remove the 4.5mm screw from the left securing the back plate.

Be careful during the next step. The keyboard is attached by two ribbon cables under the left top part of the case.

Gently fold the keyboard back away from you to expose two screws securing the trackball housing to the case. Remove these screws and set aside.