Features: Full-featured Expansion: Supports simultaneous connection of multiple port for expansion, charging and data transmission. 3G file transfer in about 1 second, extremely fast transmission , the theoretical transmission speed of 40Gbps, the transmission speed of up to 3000MB/S + JHL7440 main control chip: using JHL7440 main control program, support for fast speed transmission of 40Gbps, compatibles USB4, to ensuring stable and efficient data transmission Multiple devices compatibility: for mini, laptops and other interfaced devices, support for 8K. Ensuring stable and efficient data transmission Supports 8K video output and fast speed external storage, suitable for professional editing or design scenario. Specifications: Material: Aluminum Support capacity: 8T Product size: about 127x127x14mm/5x5x0.55in Transmission speed: 40G Speed： 40Gbps Support hard disk: M.2 NVMe 2280 USB specification: USB3.1 10Gbps Power input: 20V-1.5A PD30W Housing material: aluminum Package Includes: 1PC Docking station 1PC Docking Dock Packaging Box 1PC data cable 1PC Manual 1PC Screwdriver 1PC Heat dissipation sticker 1PC Power cord note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.