PCIe 4.0 Slimline SAS SFF-8654 8i 74pin input split to two independent SFF-8643 4i ports; Optimized impedance design delivers stable high-speed signal transmission for enterprise storage; 50cm compact flexible length, neat wiring inside server racks and chassis; Dual SFF-8643 output ports support separate RAID arrays, HDD/SSD expansion simultaneously; Heavy-duty shielding reduces EMI interference for 24/7 data center continuous operation