Rocstor CommanderX EC31 Designed, engineered, integrated, and assembled in the United States to satisfy the requirements of demanding security concerned professionals and governments, the CommanderX line can support a Solid State Drive “SSD” or a fast SATA high-capacity 3.5″ hard drive, and has a uniquely stylish and ruggedized design that will complement any desktop. It features ~1.5 Lb of recycled aluminum case that can be conveniently stacked or mounted vertically. With its built-in fan-less power supply, and quiet opera on, the Commander can be easily moved from one desktop environment to another using the provided carrying case. The CommanderX E31 is compatible with both Windows and Macintosh environments without any so ware installations using the latest USB 3.1 Type-C connection.