8-way fanout design: single SFF-8654 74Pin 8i port splits into two independent SFF-8643 4i Mini SAS HD channels; Compliant with PCIe Gen 4.0 Ultraport Slimline SAS standard for high-speed NVMe & SAS storage transmission; Compact 50cm short length keeps internal server chassis wiring neat and clutter-free; Multi-layer controlled impedance shielding eliminates signal attenuation and crosstalk under heavy loads; Locking molded connectors fit RAID controllers, drive backplanes and multi-disk JBOD arrays