"The ThinkCentre Slim 2.5" Storage Kit including a standard 3.5"" to 2.5"" conversion bracket and a standard 2.5"" bracket, you could install 3.5"" HDD or 2.5"" HDD or SSD into 2.5"" Location of the ThinkCentre Slim Form Factor machines. It is the best accessories to upgrade your ThinkCentre storage. "