The S3510BMU33 is black USB 3.0 hard drive enclosure with UASP lets connects a 3.5in SATA III hard drive (HDD) through an available USB port. The enclosure delivers optimal performance with a USB 3.0 connection, but is backward compatible with USB 2.0/1.1 host connections as well. Enhanced with UASP (USB Attached SCSI Protocol), this 3.5" SATA III enclosure performs up to 70% faster than conventional USB 3.0 when paired with a UASP-enabled host controller. Using a more efficient protocol than the traditional USB BOT (Bulk-Only Transport), UASP reduces latency, significantly increasing transfer speeds and reducing processor usage to utilize the full potential of SATA III hard drives. See UASP testing results below for further details. With supports for SATA I/II/III and large capacity drives (tested up to 4TB) this HDD enclosure is compatible with virtually any 3.5in SATA hard drive and can greatly increase the storage/backup capabilities of computer. The USB 3.0/SATA III enclosure features high quality aluminum construction, ensuring durability. Backed 2-year warranty and free lifetime technical supported.