One SFF-8654 74Pin (8X) splits to two independent SFF-8643 36Pin (4X) channels, lane allocation without bandwidth loss; Fixed 80cm length, fully compliant with PCIe Gen4 & SAS 4.0, single channel up to 24Gbps SAS / 8GT/s PCIe speed; Latching lock connectors prevent loose disconnection inside rack servers for long-term stable operation; Braided shielding suppresses EMI interference, maintains complete signal integrity under continuous high-load storage access; Designed for RAID HBA cards, NVMe/SAS backplanes, enterprise storage nodes and workstation storage expansion