Can be used on the SAS 3.0 specification when it is released. Cable material may change but the connectors will be the next generation of SAS to run at 12Gb/s. Data transfer rate up to 6 Gb/s. The High Density (HD) system referenced as HD Mini-SAS (SFF-8643) in the SAS 2.1 standard, meets the 6Gb/s SAS specification. Can connect up to 4 SATA drives to a Mini SAS HD SFF-8643 controller. Cable for internal connection. 6 Gb/s Serial Attached SCSI (SAS) specification Internal Mini SAS HD SFF-8643 Host to 4 SATA 7pin Target Hard Disk 6Gbps Data Server Raid Copper Cable