Dell NOT22108 Owner's Manual page 42

Installing the M.2 2280 solid-state drive
Steps
1. Align the notch on the solid-state drive with the tab on the M.2 card slot.
2. Slide the solid-state drive into the M.2 card slot.
3. Place the thermal shield on the solid-state drive.
4. Align the screw holes on the thermal shield with the screw holes on the solid-state drive and system board.
5. Replace the two screws (M2x4) that secure the thermal shield to the solid-state drive and the system board.
Removing and installing Customer Replaceable Units (CRUs) 41