HP Compaq nc6400 Maintenance And Service Manual page 128

Removal and Replacement Procedures
3. Remove the two Phillips PM2.0×6.0 screws 1 that secure the
modem module to the system board.
4. Lift the right side of the modem module 2 to disconnect it
from the system board.
5. Disconnect the modem module cable 3 from the
modem module.
✎
The modem module cable is included in the modem module
spare part kit and is also available in the Cable Kit, spare part
number 418876-001.
6. Remove the modem module.
Removing the Modem Module
Reverse the above procedure to install the modem module.
5–32 Maintenance and Service Guide