HP HDX 16 - Manual (Page 45)

Removal and replacement procedures 4–10
5. If it is necessary to replace the optical drive bracket:
a. Position the optical drive with the rear toward you.
b. Remove the two Phillips PM2.0×4.0 screws 1 that secure the optical drive bracket to the optical drive.
c. Remove the optical drive bracket 2.
Reverse this procedure to reassemble and install an optical drive.