Dedicated 6-in-2 Hub for Surface Pro 9/Surface Pro 11Specifically developed for Microsoft Surface 9/11/10/X, which turns the 2 USB-C plug into 6 ports (2 X USB 3.0 port, 1X 4K HDMI port, 1X USB C port (Display + Data Transfer + PD Charging), 1X SD card slot, 1X TF (Micro SD) card slot. Also works on Microsoft Surface pro 9 just flip the orientation. [Note1]: This Surface Pro 9 usb docking station won't fit your Surface Pro 9 very well if it use an protective case. [Note2]: Incompatible with Surface Go/ Surface Pro 3, 4, 5, 6,7/ Surface Laptop series. Triple display flexibility from Surface pro 9/ Pro 11+HDMI+USB CBy using the HDMI port supporting up to 4k@30Hz display, the USB-C Thunerbolt 4 port supporting up to 4K@60Hz display and the screen of the Surface Pro 8/9/X, you can choose between mirroring mode (A+A+B) and extended mode (A+B+C) to display. Triple display modes Boost your efficiency 3 times, freely show your laptop's high-resolution display on most HDTV, mo