SAS-3 12Gbps Mini-SAS HD (SFF-8643) 4i cabledesigned for RAID/HBA controller to SFF-8643 backplane links inside servers and NAS.; 30AWG conductors & 100-Ohm impedance help ensure low loss and clean signaling on short runs ( 0.5 m).; Sideband/SGPIO lines support enclosure management & drive LEDs; keep hot-swap behavior consistent.; Straight male-to-male connectors with secure latch resist vibration and accidental pull-out.; Braided jacket + heat-shrink strain relief for durable, tidy internal routing in dense racks.