HP Compaq nx8220 Maintenance And Service Manual page 94

Removal and Replacement Procedures
5. Loosen the PM2.5×13.0 spring-loaded hard drive retention
screw 1.
6. Grasp the mylar tab 2 on the left side of the hard drive and
slide the hard drive to the right 3 to disconnect it from the
system board.
7. Remove the hard drive from the hard drive bay 4.
Removing the Hard Drive
5–8 Maintenance and Service Guide