OWC 8.0TB Mercury Elite Pro Qx2 4 Bay Professional Class Desktop RAID Solution 8.0TB Multi-Interface 4 Bay Professional Grade Performance RAID Solution 7200 RPM, 256 MB cache, USB 3.0 & 2.0 / FireWire 800 (FireWire 400 Backwards Compatible) / eSATA, Mac/PC Supports RAID modes: 0,1,5,10,Span,Independent Includes: Mercury Elite Pro Qx2, eSATA connecting cable, FireWire 800 connecting cable, USB 3.0/2.0 connecting cable, Power Supply, Front panel lock with 2 keys, Pre-installed Backup and Utility software OWC 3 Year Solution limited warranty with 48-Hour Turnaround Time & Complementary 1 year Level 1 Data Recovery