This SAS cable can be used to connect internal devices, e.g. a backplane with Mini SAS HD SFF-8643 connector to a controller with Slim SAS SFF-8654 4i connector. Meet PCIe Gen3 and SAS4.0 specification. Provide four channels signal transmission as per industry standard. Data speed: 24Gbps for SAS and 8GT/s for PCIe per channel. Meet SAS3.0, Ultraport SlimSAS SFF-8654, SFF-8643 specification.