Akasa lokstor x31 x21 aluminium enclosures for 2 5in 3 5in sata drives akasa ak tl3seb bk p this lokstor x31 aluminium enclosure from akasa is a quality enclosure for 3 5in sata hard drives with superspeed usb 3 0 connection equipped with bright led s for clear indication including a clear blue led light for power and a red led light for data transfer 5 0gbps usb3 0 and 3 0gbps esata p p easy to install without the need for tools while the aluminium housing allows good heat dissi