Single SFF-8643 host port splits into four independent SFF-8482 drive terminals with built-in power pins; 12Gbps high-speed transmission per channel, fully compatible with SAS 3.0 and SATA storage drives; Premium 30AWG thin flexible wire simplifies internal routing and improves chassis airflow; Standard 100-ohm full multi-layer shielding eliminates signal attenuation and EMI interference; Extra-long 39.37 -inch length fits large full-size rack servers with long-distance internal wiring demands