Dell OptiPlex 9020 (Mid 2013) - Manual (Page 15)

4. Slide the blue drive-cage handle toward unlock position and lift the hard drive cage from the computer.
Installing the Drive Cage
1. Place the drive cage on the edge of the computer to allow access to the cable connectors on the hard drive.
2. Connect the data and power cables to the back of the hard drive.
3. Flip over the drive cage and insert it into the chassis. The drive cage tabs are secured by the slots in the chassis.
4. Slide the drive-cage handle toward the locked position.
5. Install the:
a) front bezel
b) optical drive
c) cover
6. Follow the procedures in After Working Inside Your Computer .
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