Serial Attached SCSI (SAS) is a high-speed data storage interface designed for high-throughput and fast data access | Intended primarily for data storage centers the SAS interface is backwards compatible with SATA | This allows the user to mix more expensive lower-capacity SAS drives for applications that require faster data access and higher reliability with lower-cost higher-capacity SATA drives for applications with lower access speed requirements | 6Gb/s bandwidth | 24 hr dedicated email customer support,18 Month worry-free warranty, Lifetime Technical Support