Product Collection: Spare Drive Bays & Carrier Options, Launch Date: Q4'14, Included Items: (1) 3.5 Inch hot-swap backplane FUP4X35S3HSBP, Compatible: Intel Server Chassis P4000XXSFDR. 3.5 inch hot-swap backplane spare for the Intel® Server Chassis P4000 family.Supports drives up to 12GB/s.