Remove the system board:
1. Position the computer right-side up with the front toward you.
2. Remove the M2.0x3.0 screw on the left of the system board (1).
3. Remove the M2.0x2.5 screw (2) that secures the optical drive extender to the base enclosure.
4. Lift the board at an angle (3) and remove the optical drive extender (4).
5. Slide the board partially out of the base pan (5).
88 Chapter 4 Removal and replacement procedures