2. Remove the eleven Phillips M2.0 × 3.5 screws (1) that secure the system board to the computer.
3. Rotate the left side of the system board upward (1), and then pull the system board away from the 
connectors on the side of the chassis to remove it from the computer (2).
Reverse this procedure to install the system board.
IR board cable
To remove the IR board cable, use this procedure and illustration.
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Chapter 5Removal and replacement procedures for authorized service provider parts