Dear Customer: Hello! Lemorle is a brand from China, it has been founded 16 years to focus on the development of HUB class high-tech products, our technology in China is a top technology limited company!! Lemorele products are made of aluminum alloy! Our team has gone through many fall and crash test results without worrying about quality problems!! If you encounter a quest problem during your purchase you can contact us at any time and the Lemoele team will respond and solve the problem within 12 hours!!= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =Product Introduction: Product An external device designed for Macbook laptops. By replicating and even expanding the ports of your laptop, you can make your laptop one stop connected to multiple accessories or external devices, such as power adapters, network cables, mice, external keyboards, printers, and external monitors.Multi-port USB C hub:The USB-C X2 hub perfectly combines all the necessary features.1.Type-C port X1 Data transmission rate up to 40Gbps: Support fast charge power up to 100W Support DP Alt mode mode, resolution depends on the value of the Macbook can be reached to power external devices, the maximum power is 15W!2. HDMI port X1 HDMI1.4, support resolution up to 4K@30Hz; Support copy (same screen) mode and expansion mode!3.USB A 3.0 port X3 Data transmission speed up to 5Gbps; Connect the computer to charge other devices!4.TF/SD card reading interface 1 SD, 1 TF. Support simultaneous reading, the speed supports UHS-I, USB 2.0480Mb/s theoretical data, the actual support SD/TF card type see the figure on the right (the rate in the figure is the defined rate of the card). These ports perfectly solve the problem of a single USB C or USB port on a laptop.Wide compatibility: This USB adapter hub is compatible with all systems and devices with USB C or USB ports, such as Macs, MacBooks, TVS with HDMI ports, projectors, computer monitors, USB A USB flash drives, mice, keyboards, portable hard drives, mobile phones and more!Product list: USB-C7-in-2 docking station X1 Instruction manual X1