Lenovo IdeaCentre D400 Series Hardware Maintenance Manual page 48

Hardware Maintenance Manual
5. Install the new memory module.
(1) Align then insert the new memory module into the connector.
(2) Push down on the top edge of the memory module. Make sure the
retaining clips latches lock the memory module in place.
6. Slide the system board tray into the chassis.
7. Replace the front bezel. Refer to step 7 of the "Replacing the front bezel".
8. Refer to "Completing the installation".
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