HP Nc2400 - Compaq Business Notebook Maintenance And Service Manual page 151

3. Remove the two Phillips PM2.0×3.0 screws 1 that secure the
modem module to the system board.
4. Lift the rear edge 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 412753-001.
6. If it is necessary to replace the modem module cable,
disconnect the cable 4 from the system board.
Removing the Modem Module
Reverse the above procedure to install the modem module.
Maintenance and Service Guide
Removal and Replacement Procedures
5–59