HP EliteDesk 800 Hardware Reference Manual page 91

5. If the computer is on a stand, remove the computer from the stand.
6. Remove the computer access panel.
7. Disconnect the power cable (1) and data cable (2) from the back of the hard drive.
8. Pull the release lever next to the rear of the hard drive outward (1). While pulling the release
lever out, slide the drive back until it stops, then lift the drive up and out of the bay (2).
ENWW Installing and removing drives 83