OWC ThunderBay 4 12.0TB 4-Bay External Drive, Dual Thunderbolt 2, Raid Ready OWC ThunderBay 4 High-performance Thunderbolt 2 interface drive with 4 3.5" drive bays Incredible Thunderbolt 2 performance Plug and play RAID-ready Up to 780MB/s read / 759MB/s write RAID 0 performance. High-Quality, Certified, Double-Shielded 1-Meter Thunderbolt cable included