Dell OptiPlex 790 (Early 2011) - Manual (Page 20)

7. Release the screws that secure the 2.5 inch hard drive to the underside of
the hard-drive bracket.
Installing The Hard Drive
1. Tighten the screws to secures the two hard drives to the hard drive
bracket.
2. Flex the hard-drive bracket and then insert the single hard drive or two hard
drives into the bracket.
3. Press the retention clips inwards and slide the hard-drive bracket into the
drive cage.
4. Install the cover .
5. Follow the procedures in After Working Inside Your Computer .
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