Supports SuerSpeed USB 3.0 data rate up to 5Gb/s Backward compatible with previour version of USB ports (1.0, 1.1 &2.0) Supports SATA 1.5G/3.0G/6G speed negotiation Supports 2.5" and 3.5" hard drives up to 4TB capacity Compliant with serial ATA specification revision 3.0 Plug and play, no software installation needed.