One-click offline cloning of dual disks for simultaneous reading and writing,No need to connect to a computer, just plug two hard drives into the base and press the copy button to copy the data from the source drive to the target drive, making data backup easier. High-speed transmission means no more waiting for transmission,2GB files can be transferred in about 1 second, high-speed transmission of hard disk data improves work efficiency. Convenient direct plug-in hard drive replacement is more convenient,Direct plug-in design, no need to install, just plug it in and it will run, making it easier to replace multiple hard drives. Supports multiple M.2 hard drives,Vertical plug-in design, no size restrictions, suitable for 5 different specifications of M.2 NVME solid state drives,22110/2280/2260/2242/2230(Support). 360° hollow heat dissipation for fast reading and writing without getting hot,Hollow and unobstructed design, 360° unobstructed heat dissipation of the hard disk, no overheating and no lag Product model:SD08 Maximum expansion:4TB per disk, total capacity 8TB Transmission speed:20Gbps Support hard drive:M.2 NVME 2230/2242 2260/2280/22110 power supply:12V2A Applicable equipment:Laptop/mobile phone/tablet/game console, etc. (The product appearance and printed words may vary depending on the batch, but this does not affect use) Voltage: AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Color: As shown Material: aluminum alloy Package Contents: 2 x NVME PCIE Dock 2 x adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.