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

Installing The Memory
1. Insert the memory module into the connector on the system board.
2. Press down on the memory module until the release tabs spring back to
secure it in place.
3. Install the drive cage .
4. Install the front bezel .
5. Install the cover
6. Follow the procedures in After Working Inside Your Computer .
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