1-to-4 splitter design connects four SFF-8482 hard drives from one SFF-8088 port; Built-in power pins to supply power for SAS hard drives without extra wiring; 2m/ 6.6 ft ideal length for rack server and external storage enclosure wiring; Gold-plated contacts minimize signal loss for stable 6Gbps SAS transmission; Double EMI shielding blocks interference, durable flexible outer cable jacket