1to4 breakout cable converts single SFF8643 Mini SAS HD host port to four 29pin SFF8482 SAS/SATA hard drive ports; Supports 12Gbps SAS 3.0 highspeed data transmission for enterprisegrade HDDs, SSDs and RAID storage systems; Optimized wire harness ensures low signal loss and stable signal integrity for multidrive server expansion; Servergrade durable construction for continuous operation in rackmount servers and storage backplanes; Plugandplay design, ideal for HD1 host adapters, RAID controllers and highdensity storage deployments