HP ProOne 600 Hardware Reference Manual page 52

6.
Slide the access panel latches toward the edges of the chassis, then slide the access panel toward
the top of the computer until it slides off the chassis.
Figure 2-51
7.
Lift the tab at the back of the optical disc drive enclosure to release the drive.
Figure 2-52
46 Chapter 2 Hardware repair and upgrade
Removing the access panel
Removing the optical disc drive