HP ProBook 450 G4 Notebook PC and HP ProBook 455 G4 Notebook PC - Maintenance and Service Guide
3. Lift the hard drive from the bay (3).
4. To remove the hard drive cover from the hard drive, remove the 4 Phillips PM3.0×3.0 screws (1) that
secure the bracket to the drive, and then lift the cover o the drive (2).
Reverse these procedures to install a hard drive.
Component replacement procedures 37