Hornettek Enterprise 3.5in 4 Bay USB 3.0 JBOD SATA HDD Enclosure(HT-3402U3) Supports four 3.5-inch SATA hard drives to USB 3.0 or eSATA interface, using a single USB 3.0 or eSATA cable. Access 4 hard drives individually (JBOD). Energy Saving design, reducing power consumption by 25% Built in 80mm Cooling fan with Fan Speed Control, reducing HDD heat up to 33%.