Dell OptiPlex 3090 Small Form Factor Service Manual page 42

Steps
1. Align the graphics card with the connector on the system board.
2. Place the card in the connector and press down firmly.
NOTE: Ensure that the card is firmly seated.
3. Close the expansion card latch and press it until it clicks into place.
Next steps
1. Install the side cover.
2. Follow the procedure in After working inside your computer.
42 Removing and installing components