HP Armada 7300 Installation And Operation Manual page 105

Replacing the Drive Cage in the Desktop Expansion Base
1. Replace the half-height bay blank bezel by inserting the two
tabs on each side of the bezel into the two slots on each side of
the drive cage. (This bezel was removed when the half-height
drive was installed.)
Attaching the Half-Height Bay Blank Bezel to the Drive Cage
2. Align the holes in the front and rear base tabs of the drive cage
with the pins on the bottom of the expansion base.
3. Place the aligned drive cage on the floor of the
expansion base.
Placing the Drive Cage onto the Bottom of the Desktop Expansion Base
10-18 Installing and Removing a Half-Height Bay Device