Step 22
Peel up the orange hard drive ribbon from above the ExpressCard cage.
Step 23
Disconnect the speaker cable from the front right corner of the left I/O board.
Step 24
Remove the following 2 screws:
One 4.3 mm black T6 Torx screw on the left side of the speaker.
One 9.4 mm silver T6 Torx screw on the right side of the speaker.