Step 10 — Storage Interface Board
Remove the four silver Phillips screws attaching the optical drive to the black plastic framework (two on each side).
Step 11
If your mini does not have a Bluetooth board, you may skip the following step.
Remove the yellow tape securing the Bluetooth antenna cable to the black plastic framework.
Lift the silver Bluetooth antenna board out of its slot.
Step 12
The cables you're about to remove are very fragile - do not pull directly on the wires. Instead, try to pry up the connector directly, using your fingernails or a small flathead screwdriver if necessary.
Flip the mass storage assembly over and disconnect the speaker and fan cables from the interface board.