This is aG-Technology G-DOCK EV Thunderbolt Raid Array w/2 - 1 TB USB-3 SCSI Drives, power supply and Manuals. This is compatible with Mac or PC Computers, with Thunderbolt interface. Additionally, the 1 TB drives can operate stand-alone on USB-3.Includes the docking station, two 1TB Evolution Series USB-3 drives and set-up and user manuals. Drives are formatted to work with PC.Guaranteed no DOA. I don't think it was ever used.
"The G-Dock Ev blends USB 3.0 and Thunderbolt technologies together to offer a fast and flexible storage option. It comes with two TB G-Drive Ev units that can double as standalone USB 3.0 portable drives.You can also set up the G-Dock's storage using RAID 1 or RAID 0 and make it work just like any other two-bay Thunderbolt device."