The CalDigit T4 20TB Thunderbolt 2 RAID Array (4 x 5TB) operates using 100-240 VAC at 2.0A and 50-60 Hz. It includes four drive modules, an AC adapter, an AC power cords, and two keys. CalDigit T4 20TB (4x 5TB) Thunderbolt 2 External RAID Hard Drive, 1500 RPM, 20Gb/s Transfer Rate.
eBay