Step 1 Lower case
Use a P5 pentalobe driver to remove ten screws securing the lower case, of the following lengths
Step 2 Battery Connector
Grab the clear plastic pull tab attached to the battery connector and pull it parallel to the board toward the front edge of the Air
Step 3 I/O Board Cable
Use the flat end of a spudger to pry the I/O board cable connector up out of its socket on the I/O board
Step 4