ineo I-NA309D Pro, 3.5-Inch SATA Dual Bay RAID Enclosure to USB 3.0 (Grey) Aluminum Alloy Casing with powerful fan provides excellent cooling Blue and Red LED illuminated Panel indicates power and hard disk drive access activity USB3.0 Transfer rate up to amazing 5Gbps Support Single, Fast (RAID0), Safe (Raid1) Options Support Rebuild offline and auto failover