Dell 2130cn Color Laser Printer - Manual (Page 174)

3. Remove the control board cover.
4. With the connector of the memory toward the slot, insert the memory vertically into the slot.
5. Push the memory into the slot firmly.
6. Install the control board cover.
NOTE: Take off the below edge of the control board cover by turning the control board cover on hinge in the above edge. Next, remove the control
board cover by pulling it from the printer.
NOTE: Ensure that the memory is firmly fixed in the slot and cannot be moved easily.
NOTE: Insert the above hinge of the control board cover into the above slit on the printer. Next, insert the below hinge of the control board cover
into the below slit on the printer.