Dell Inspiron 5584 Service Manual page 44

NOTE: If available, replace the thermal shield after replacing the solid-state drive/Intel Optane.
4 Align the screw hole on the thermal shield with the screw hole on the palm-rest and keyboard assembly.
5 Replace the screw (M2x3) that secures the thermal shield to the palm-rest and keyboard assembly.
44 Replacing the solid-state drive/Intel Optane memory module