Remove the following 10 screws securing the lower case to the Air:

• Six 2.8 mm Phillips screws.
• Two 3.8 mm Phillips screws.
• Two 5.4 mm Phillips screws.

Slightly lift the lower case near the vents and push it toward the rear of the computer to free the mounting tabs.

Disconnect the battery connector by pulling it straight out of its socket.

Remove the following nine screws securing the battery to the Air:

• Four 2.9 mm Phillips.
• Four 3.8 mm Phillips.
• One 7.2 mm Phillips.

Lift the battery out of the Air.

Remove the following two screws securing the speaker assembly to the upper case.

• One 3 mm Phillips.
• One 5.8 mm Phillips.

Use a spudger to lift the audio-out connector board off the adhesive that secures it to the hard drive bracket.

Disconnect the audio out connector from its socket.

Rotate the speaker assembly toward the center of the Air.

Use a spudger to pry the speaker cable connector up off the audio board.

Disconnect the port hatch ribbon cable from the logic board by pulling it straight up by its black pull tab.

If necessary, pull the audio out ribbon cable off the adhesive securing it to the upper case.

Use the pointed end of a spudger to de-route the microphone cable from the hard drive bracket.

Remove the following screws securing the hard drive to the upper case:

• Two 3.9 mm Phillips screws.
• One 4.7 mm Phillips screw.

Use the tip of a spudger to remove the cosmetic screw cover to reveal the last remaining screw securing the hard drive.

Remove the 4.7 mm Phillips screw securing the hard drive to the upper case.