SIIG’s Dual 2.5” SATA MobileRack quickly and easily converts up to two 2.5” serial ATA hard disk drives into a removable and portable drive. The tool-less/tray-less design makes switching drives fast and super-convenient. It is designed to switch drives without opening the computer case enabling you to move large files from one system to another or run multiple OS on the same system. It is made of high-quality aluminum for maximum durability and efficient heat dissipation. It is Serial ATA compatible and supports data transfer rates up to 3Gb/s. Additional features include front LED indicator for power and HDD operation.