SFF-8643 HD Mini SAS to SFF-8087 Mini SAS Backplanes/Adapters/ Expander, to provide for 6Gbps connectivity internal to the server between the SAS/HBA controller and SAS hard drive ^^ This SFF-8643 to SFF-8087 Mini SAS cable is compliant with SAS 2.1 and the latest SAS 3.0 spec, allowing for use of same part numbers when system speeds increase from 6Gb/s to 12Gb/s ^^ 3M Ribbon Cabling and thinner 30 AWG cable packaging, allowing more efficient routing that drastically improves fan airflow and the internal server chassis temperatures considerably, and simplifies the configuration of storage devices, to decrease mean failure rates on your equipment and ensure longer service life ^^ This internal Mini SAS HD cable is ideal for connecting controller cards to internal SAS and SATA backplanes ^^ Our Mini SAS cables are thoroughly tested to ensure premium quality