The NST-428S3-BK SuperSpeed USB 3.0 Dual Bay Hard Drive Dock is a features unit that will let you add or swap hard drives with your computer. Integrated with the latest USB 3.0 technology and USAP support, this dock can help speed up file copy and cloning. The need of opening up your computer case or installing the hard drive into an enclosure is now a distant memory. Simply insert any 2.5" or 3.5" SATA I/II/III hard drive into the Dual Bay Hard Drive Dock and you are ready to work. The TX series USB 3.0 Dual Bay Hard Drive Dock is the perfect solution to access any hard drives in seconds.