HP Compaq nc6220 Maintenance And Service Manual page 147

2. Position the computer with the right side toward you.
3. Disconnect the serial connector module cable 1 from the
system board.
4. Remove the two HM5.0×11.0 screw locks 2 that secure
the serial connector module to the base enclosure.
5. Remove the serial connector module 3 from the
base enclosure.
Removing the Serial Connector Module and Cable
Reverse the above procedure to install the serial connector
module.
Maintenance and Service Guide
Removal and Replacement Procedures
6–45