Hornettek Enterprise 4X USB3.0/eSATA 3.5-Inch 4 Bay Enclosure (HT-3402U3) Access 4 hard drives individually (JBOD) Supports four 3.5-inch SATA hard drives to USB 3.0 or eSATA interface, using a single USB 3.0 or eSATA cable. Compact and stylish 4-bay spaceship round design for best air-circulation solution Build in 80mm Cooling fan with Fan Speed Control, reducing HDD heat by 33% max Smart Auto Power Control, auto power on/off when the PC is on/off Energy Saving design, reducing power consumption by 25% Windows VISTA 32/64 bit, Windows 7 32/64 bit (with MBR enabled, supports total capacity up to 2TB) Windows Vista 32/64 bit, Windows 7 32/64 bit (with GPT enabled, supports total capacity more than 2TB