4x7Pin SATA is the target, connect to the hard drives with SATA port. If the Mini SAS (SFF-8643) on your backplane, this cable will not work with them. Serial Attached SCSI (SAS) is a high-speed data storage interface designed for high-throughput and fast data access，Cable Length 0.5M.
The YIWENTEC Internal HD Mini SAS (SFF-8643 Host) to 4X SATA (Target) Hard Drive Cab is ideal for users in need of a compact, high-performance storage solution for their SFF (Small Form Factor) PCs.
