Dell OptiPlex 790 (Early 2011) - Manual (Page 25)

9. 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 secure the 2.5 inch hard drive(s) to the hard-drive bracket.
2. Flex the hard-drive bracket and then insert the single 3.5 inch hard drive or the two
2.5 inch hard drives into the bracket.
3. Press the hard-drive bracket latch towards the hard drive and insert it into the
chassis.
4. Connect the data cable and power cable to the back of the hard drive(s).
5. Install the cover .
6. Follow the procedures in After Working Inside Your Computer .
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