Startechcom hard drive enclosures startechcom s352bu33hr the s352bu33hr 2 bay raid enclosure from startechcom lets you build an external raid array using two 35in sata hard drives and add it to your computer through usb 30for optimal performance from your sata iii drives the external raid enclosure supports a uasp enabled usb 30 host connection which performs up to 70 faster than conventional usb 30 when paired with a uasp compatible host controller the raid enclosure also lets y