Dell XPS 14 9440 Owner's Manual page 50

NOTE: XPS 14 9440 consists of a thermal pad adhered to the system board under the M.2 SSD. The thermal pad may
get separated from the system board or get adhered to the SSD. Adhere the thermal pad to the SSD compartment if it is
detached from the system board during the removal process.
Figure 23. M.2 SSD thermal pad
50 Removing and installing Field Replaceable Units (FRUs)