The MB671SK is the first and many of Icy Dock's internal screwless enclosure. It provides the user with tray-less, easy hard drive access and hot-swap capabilities without having to screw in a tray. The enclosure is built spacious enough to fit any 3.5" SATA brand hard drive, and firm enough to prevent the hard drive from coming loose with the connectors. With its stylish faceplate exterior and elegant trigger door-handle design, the series brings convenience and fashion to hard drive peripherals. The body is built by an steel metal finish to create a perfect cooling environment for the hard drive. The built-in fan and front ventilation system further prevents the hard drive from overheating. But we have not disregarded issues of security as we installed an access key lock to prevent any hard drive thefts. With this new enclosure, exchanging data and information can be done with ease and buying new hard drive doesn't have to mean going through an exhaustive process with a screwdriver. Those with limited space or limited SATA connections inside their computers can actually be worry-free from running out of hard drive storage. A set of hard drives will allow a user to organize them in categories of pictures, videos, and other data without having to purchase trays and will be able to use them instantly by just plugging in the hard drive into the enclosure. Exchanging drives is now virtually hassle free!