Step 25
Disconnect the orange cable from the optical drive.
Step 26 — Optical Drive Replacement
Use a spudger to carefully pry the silver metal bracket off the left side of the optical drive. Be careful not to bend the bracket, as it is very thin and bends easily. If the bracket doesn't come free easily, heating the adhesive may make prying the bracket off easier.
Step 27
Peel up the L-shaped piece of black tape from the top of the drive.
You'll want to reapply this tape in the same position on your replacement drive.