HP ProOne 400 G1 All-in-One Hardware Reference Manual page 50

7. Rotate the bottom edge of the access panel up (2), and then lift the access panel off of the
computer (3).
Figure 3-42
The optical disc drive can now be seen in the upper left side of the chassis.
Figure 3-43
8. Loosen the captive screw (1) through the optical disc drive bracket that secures the optical disc
drive to the chassis.
NOTE:
optical disc drive. Remove the bracket from the chassis and follow the remaining steps using two
screws from the option kit to mount the bracket to the optical disc drive.
44 Chapter 3 Hardware repair and upgrade
Removing the access panel
Locating the optical disc drive
The optical disc drive bracket is installed on the chassis if the model does not have an