Dell P117F001 Service Manual page 22

Steps
1. Lift the mylar covering the memory-module slot.
2. Align the notch on the memory module with the tab on the memory-module slot on the system board.
3. Slide the memory module into the memory-module slot on the system board.
4. Press down on the memory module till the securing clips click, locking the memory module in place.
NOTE: Repeat steps 1 to 4 for the second memory module being installed into your computer.
Next steps
1. Install the base cover.
2. Follow the procedure in After working inside your computer.
22 Removing and installing components