HP Compaq NX4820 Maintenance And Service Manual page 123

Removal and Replacement Procedures
7. Remove the four PM2.5×4.0 screws 1 that secure the
hard drive frame to the hard drive.
8. Lift the frame 2 straight up to remove if from the hard drive.
9. Slide the hard drive connector 3 off the hard drive.
Removing the Hard Drive Frame and Connector
Reverse the above procedure to install and reassemble the
hard drive.
5–10 Maintenance and Service Guide