DataTale USB 3.0 RAID 4-Bay Enclosure for 3.5" SATA Hard Drive(s), RC-M4SP USB 3.0: Up to 3Gbps (375 MB/Sec) Provides JBOD, RAID 0 (Striping), RAID 1 (Mirroring), Span, Clone, RAID 5, RAID 1+0, and optional HotSpare for effective storage management Configures RAID modes easily using LCM or RAID MASTER; no IT expertise required Dissipates heat efficiently with aluminum housing & quiet fan The SmartGuider makes HDD installation, removal and insertion easy by enabling trayless HDD positioning and effortless HDD hot-swapping when necessary.