HDD/SSD Off-line Duplicator No PC required when cloning a hard drive - just plug both hard drives together and press the "Copy" button for several seconds until the LED begins flashing, and the cloning process will begin. Progress indicator with LED: 25% - 50% - 75% - 100%. Support UASP and SATA 6Gbps Available - The UASP Transfer Protocol only can accelerate read and write speed of SSD hard disk High-class chipset ASM1156, enhanced with UASP Transfer Protocol, this dock lets you get the most out of the fastest drive technologies such as SATA III (6 Gbps) with performance up to 70% faster than conventional USB 3.0 when paired with a UASP-enabled host controller. Features - Supports offline cloning, with no drivers needed and easy installation - Support 2x 8TB hard drive; Supports 2.5" & 3.5" SATA (SATA I/II/III) HDD and SSD - Equipped with USB3.0; Support SATA III (6 Gbps) and UASP for optimal performance; Backward compatible with USB 2.0/1.1 - Compatible Systems: Windows 2000/XP/Vista/7/8, Mac OS 9.1/10.8.4 or above - On/Off power switch; LED light indicates Power and Activity status; Initiates sleep mode after 30 minutes of no operation Attention - The target disk must be larger than the source disk. - Please backup files in the target hard drive before cloning. Any files in target hard drive will be overwritten when offline cloning occurs. - To avoid data transfer errors, overheating and damage to the device please make sure that there are no faulty driver cells. - To avoid data loss, do not remove or insert drives when one drive is working in the docking station. Please power off the docking station before removing.