Step 49 — DC-In Board
There may be black tape covering the screw in the following step, remove it if necessary.
Remove the single Phillips screw that attaches the DC-In board to the lower case.
Step 50
Pull the flat, black DC power cable up from the bottom of the case, removing tape as necessary.
Lift up the front right corner of the DC-In board and rotate it clockwise to slide the power receptacle out of the lower case.
Step 51 — Optical Drive
Remove the two Phillips screws from the upper right corner of the computer.
Remove the newly-liberated small metal bracket.