The expansion dock supports high-power power supply and will not make devices stuck. The highest transmission speed reaches 5Gbp/s.With high-performance chip, the expansion dock supports the connection to 4 devices like keyboard, hard drive and laptop simultaneously. It is compact and lightweight, which is convenient to carry with you.Made of ABS and metal material, the expansion dock is durable to use.The length of the item is 114.5mm, width is 26mm and height is 9.5mm.The expansion dock is compatible for Windows series, for Mac OS and for Linux systems.Item Name: Expansion DockMaterial: ABS,MetalInterface Type: 1 x USB3.0, 3 x USB2.0Transmission Rate: USB3.0: 5Gbp/s, USB2.0: 60MB/sSize Details: 11.45cm x 2.6cm x 0.95cm/4.51 x 1.02 x 0.37 (Approx.)Notes:Please note that the Type-C female interface does not serve as an output port, but is used for additional power supply of the docking station. Please note that when connecting the large-capacity hard disk, it's necessary to connect to the Type-C interface for additional power supply.Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.Please allow slight dimension difference due to the manual measurement.Package Includes:1 x Expansion Dock