HP Compaq NC4010 Maintenance And Service Manual page 113

4. Remove the PM2.0×8.0 screw 1 and PM2.0×4.0 screw 2
that secure the optical drive to the notebook.
5. Push on the back of the optical drive to disconnect it from
the system board.
6. Remove the optical drive 3.
Removing the Optical Drive
Reverse the above procedure to install the optical drive.
Maintenance and Service Guide
Removal and Replacement Procedures
5–25