Mounting upgrade kit for Noctua NH-L9a, NH-L9a-AM4 and NH-L9i CPU coolers (see detailed compatibility information on Noctua website) Enables the installation of compatible Noctua CPU coolers on AMDs AM5 socket for Ryzen 5, Ryzen 7 and Ryzen 9 processors Tailor-made for AM5, uses the motherboards stock AMD backplate for installation Outstanding reliability, optimal contact pressure and easy, straightforward installation Renowned SecuFirm2 quality