j. Internal frame (see Internal frame on page 51)
k. Serial port board or VGA port board (see Serial port board or VGA port board on page 66).
Remove the system board:
1. Position the computer upright and open.
2. Disconnect the following cables from the system board:
(1) Power button board cable
(2) Speaker cable
(3) Fingerprint reader cable
3. Position the computer upside down.
70 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts