HP Armada 7300 Installation And Operation Manual page 100

7. Replace the three screws that secure the drive cage. The two
matching screws go into the outside rails. Ensure that the right
screw 1 secures the grounding strap grommet 2 to the drive
cage shield.
Replacing the Screws in the Drive Cage Shield
Installing and Removing a Half-Height Bay Device 10-13