1:3 Offline Hard Drive DuplicatorORICO 4-bay hard drive docking station supports duplicating three copies simultaneously via one button without connecting to a computer. Backup before cloning or the target disk will be overwritten. (LED indicator monitors the working status). 80TB Capacity Expansion]This hard drive dock is suitable for a 2.5,3.5 inch SATA SSD HDD with a max of 4x20TB capacity, making it an ideal choice for professional users or photographers who require ample storage space to manage large volumes of high-resolution images and videos. Aluminum-Alloy Heat DissipationThese 4-bay HDD docking stations are constructed from durable and nice-looking aluminum alloy material with a vertical design, which provides excellent performance and efficient heat dissipation. USB3.2 Gen 1 InterfaceThis hard drive docking station adopts a USB 3.2 Type-C to C interface which supports transfer speeds up to 5Gbps and also supports S.M.A.R.T and TRIM functionalities. Widely CompatibleThe hard