Cavalry CAHDD Series USB Dual-bay Dock and One (1) 1 TB 3.5-Inch SATA Hard Drive-Bundle CAHDD3001T1 Two-bay dock for easy consolidation of storage One (1) 0A38016, Hitachi, 16MB 7200 RPM SATA II Hot-swappable bays with open design for access and ventilation Supports JBOD and BIG (Spanning) configurations Transfer rate of 480Mbps (USB 2.0)