This third-generation NexStar JX Dual Bay Dock with Clone Function is designed to work with SATA III Drives and for duplicating SATA III drives of any size and function as a Dual Bay dock. It is capable of duplicating in any combination, HDD to HDD, HDD to SSD, SSD to HDD, or SSD to SSD in any capacity This simple docking design offers quick access and removal of your SATA drives for storage or data duplication. With its built-in one-button cloning; you can copy sector-by-sector as a standalone device without even connecting to a computer. When connected to a computer, the device transforms into a Fast USB 3.2 Gen1 storage device for 2 high-capacities HDD or SSD. Whether your need is storage or duplication, the Vantec NexStar JX SATA III HDD Duplicator is the perfect solution.