SI-1329NAS 2bay RAID external enclosures created a new age of storage. Its tray-less and tool free design makes easy HDD installation. It comes with a user configurable RAID engine and supports multi RAID function to protect you valuable data without extra RAID card. With super speed USB3.0 interface, provide you the best data transfer performance. Sleeping mode in synchronization with PC for power saving. It's definitely your best data storage partner whether in the office or home.