Dell OptiPlex 9020 All In One (Mid 2013) - Manual (Page 20)

5. For a 2.5–inch hard drive, remove the screws that secure the hard drive to the hard-drive bracket. Slide the hard
drive from the hard-drive bracket. Remove the screws that secure the hard-drive case to the hard drive.
6. For a 3.5–inch hard drive, remove the screws that secure the hard drive to the hard-drive bracket. Slide the hard
drive from the hard-drive bracket.
Installing the Hard Drive
1. For a 3.5–inch hard drive, slide the hard drive into the hard-drive bracket.
2. For a 2.5–inch hard drive, tighten the screws that secure the hard-drive case to the hard drive. Slide the hard drive
into the hard-drive bracket.
3. Align and place the hard-drive bracket on the computer.
4. Tighten the screws that secure the hard drive to the hard-drive bracket
5. Connect the hard-drive cables to the hard drive. Thread the cables into the notches on the hard-drive bracket.
6. Install:
a) VESA mount bracket
b) back cover
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