Connect and swap four 2.53.5" SATA drives or SSD through USB 3.0. Support SATA III (6 Gbps) and UASP for optimal performance. Compatible with USB enabled computer systems such as Dell Optiplex & Apple Mac & MacBook and SATA 2.5in and 3.5in hard drives. Dock and Swap Hard Drives directly to your computer system without mounting.