Oodelay USB 3.0 + eSATA III 6Gbps to x2 HDD Port Multiplier RAID Controller Integrated hardware RAID controller for max performance Supports RAID 0, RAID 1, SPAN (BigDrive), JBOD individual drives, and optical drives DIP Switch on board for easy Hardware RAID configuration Backwards compatible. Supports eSATA I, eSATA II, eSATA III, USB2.0 and USB3.0 host connection Does not support USB as boot drive. Port Multiplier requires compatible SATA Host connection.