RT3SN5HP RAID Tower 3 (black color) integrated with 5X1 HPM-XA Enclosure version and Snap-In Disk Array. Install up to five 3.5" SATA hard drives of any capacity (drives not included). Drives are added or removed like tape cartridge from each drive bay with no special tool required. Connect to system via eSATA port (connecting cables included). Drives can be configured as RAID0, RAID1, RAID3, RAID5, RAID10, JBOD, Clone Mode using built-in hardware RAID.
Please check the following product web page for detail http://www.addonics.com/products/raid_tower/raid_tower_rtiii.asp