G-Technology G-DOCK ev with Thunderbolt Expandable Storage Solution 2TB (0G02719) Thunderbolt technology for fastest data transfer  up to 10Gb/s Ships in JBOD; User-configurable software-based RAID 0 (performance) or hot-swappable RAID 1 (backup) Up to 2 TB of configurable storage transfer Ships with two USB 3.0 G-DRIVE ev hard drives Maximum flexibility: Works with any Evolution Series G-DRIVE ev products