It connects a RAID or PCI Express controller with SFF-8087 connector to a SAS backplane or SATA/SAS drive enclosure with SFF-8087 interface The mesh harness of internal Mini SAS 36 Pin cable is easy to route in tight spaces and provides sufficient length for internal cable management; also with stainless steel latches to ensure a solid connection Supports up to 6Gbs data transfer rate per drive. Data transfer speed is determined by the capabilities of your SAS controller and SATA drives