This heatsink cover to help you add a 2280/2230 SSD with Slot 2 in the Precision 3561 and Latitude 5521 series, making it a plug and play replacement. D P/N: 6GDFR, 06GDFR, CN-06GDFR Manufacturer Part Number(s): 46M.0NSMS.0001 Reference list of compatible with Dell Laptop Models: - Precision 3561 (M3561) (2021) series - Precision 3560 (M3560) (2021) series - Latitude 5521 (E5521) series - Latitude 5520 (E5520) series What's in the Box: 1x M.2 2280/2230 SSD Thermal Shield 2x Screw