This expansion dock is plug play and driver-free, which is easy and convenient to use. Featured with powerful chip, this expansion dock supports high-speed and stable data transmission and read and write function. It is constructed of metal and ABS material. The length of this product is 15cm. This expansion dock is compatible for laptop, keyboard, mouse, U disk, printer, mobile hard disk and so on. Item Name: Docking Station Material: Metal, ABS Style A Interface: USB, Style B Interface: Type-C Expansion Interface: 4 x USB3.0 Transmission Rate: 5Gbps Features: Multifunctional, Fast Transmission, Lightweight Size Details: Length: 15cm/5.91"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Docking Station