HP Compaq NC4010 Maintenance And Service Manual page 136

Removal and Replacement Procedures
2. Remove the two PM2.0×3.0 screws 1 that secure the switch
board to the system board.
3. Lift up on the middle of the switch board 2 to disconnect it
from the system board.
4. Remove the switch board.
Removing the Switch Board
Reverse the above procedure to install the switch board.
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