Converts single SFF8643 4i Mini SAS HD port to dual SFF8639 U. 2 interfaces for NVMe SSD multidrive expansion; Integrated SATA 15pin power supply delivers stable power to U. 2 drives, simplifying poweranddata wiring; Supports 12Gbps highbandwidth SAS/NVMe data transfer for enterprise storage arrays and RAID deployments; 32AWG lowloss pure copper wire minimizes signal attenuation and crosstalk for longterm reliability; 1meter optimized length enables clean internal routing in standardsize rack servers and workstations