Full function expansion: support multiple ports to connect at the same time for expansion, charging, and data transmission. Support daisy chain connection: daisy chain connection, which can be expanded to multiple for 3 devices to meet the needs of multi-screen office, entertainment and multiple storage space. 40Gbps high speed: for 3 interface, compatible with for 4/3/USB4.0, theoretical transmission speed can reach 40Gbps, and the measured transmission speed is up to 3000MB/S+, which can quickly complete file transfer, which is about 8 times faster than the traditional USB3.0 standard interface transmission speed. Multifunctional expansion: equipped with two for ports, 1 USB-3.2 (10G) port, and a power PD port, free from interface restrictions. Made of aluminum alloy, equipped with thermally conductive silicon, it has good heat dissipation. Suitable for host, host, Linux host, and for interface. Only supports NVMe 2280 solid state drive Parameters: Name:for 3 hard drive box expansion dock 3 port: 40Gbps Support hard drive: M.2 NVMe 2280 USB specification: USB3.1-Gen2 10Gbps Power input: 20V-1.5A PD30W Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC100-240V Note: due to different production batches, there are differences in printing screen printing, which does not affect the use. Color:Silver Material:Aluminum Alloy Package Contents: 1 * docking station 1 * for data cable 1 * power cord with power plug 1 * screwdriver(The color is random, and the designation is not accepted) 1 * heat sink(The color is random, and the designation is not accepted) 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.