Features: Hard disks are supported: one for M.2 and one for M.2 NVME. Only M.2 protocol hard disks can be inserted into the left side of the hard disk copying machine, and only M.2 NVME protocol hard disks can be inserted into the right side of the copying machine. Please insert the m.2 protocol hard disk into the left slot of the hard disk copying machine, and insert the M.2 nvme protocol hard disk into the right slot of the hard disk copying machine. After the M.2 protocol hard disk and M.2 NVME protocol hard disk are correctly inserted, after the hard disk test indicator is on (if the hard disk test indicator is not on, please check whether your hard disk protocol not meet the requirements), press and hold the offline cloning button, and you will see the cloning progress indicator flashing, and then press button briefly to start automatic cloning. Hard disk reading and writing function ① Support independent reading and writing of M.2 hard disk ② Support independent reading and writing of M.2 nvme hard disk ③ Support simultaneous reading and writing of M.2 hard disk and M.2 NVME hard disk. The product have a hard disk storage box, appearance and high-quality materials, which can store and protect your hard disk, and it is also convenient for you to go out for office entertainment. Products with 2-in-1 data cable (USB C/A to USB C) can be suitable for more devices. Specifications: Component:ABS Size:Approx.8x7.7cm/3.15x3.03inch Package Includes: 1Pc Solid States Disk Duplicator note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.