Vantec NexStar MX Dual Bay External Hard Drive Enclosure is a quick and simple way to expand storage capacity to your computer. It comes without the hassle of diving inside the PC and messing with all the wires, cables and connections. The sturdy drive cage protects your hard drive while the stylish aluminum case effectively draws away the heat; the front vents and rear fan keep your hard drive(s) cool and improve performance. Add two independent SATA I/II hard drives or configure into a single JBOD drive for up to 2 terabytes of drive space.