Dual independent SFF-8644 external female ports converted to dual SFF-8643 internal female ports, bidirectional high-speed SAS signal transmission; Equipped with slim low-profile half-height metal bracket, fits slim servers, compact workstations and small chassis with limited expansion space; Gold-plated high-density contacts minimize signal attenuation and electromagnetic interference, stable performance for 24/7 enterprise storage workloads; Compliant with mainstream SAS bandwidth standards, works seamlessly with RAID HBA cards, drive backplanes and JBOD storage enclosures; Plug-and-play design, no extra driver or auxiliary power required for easy internal storage hardware interconnection