Free Express Shipping! OWC Mercury Elite Pro Dual 12TB 2-Bay Thunderbolt 2 RAID Array (2 x 6TB) 2 x 6TB 3.5" Hard Drives, 2 x SATA III 3.5" Drive Bays, 2 x Thunderbolt 2 - 1 x USB-B 3.2 Gen 1, RAID 0, 1, SPAN, and Independent Modes, Preconfigured as...