?100W USB-C Power Delivery & Perfect Combination?This Surface Pro 9 accessories support USB C 100W Power Delivery though Type C 3.1 Thunerbolt 4 port. Special bevel-side and compact design of this docking station perfectly match your Surface pro 9/8/X. Light-weight is convenient for travel or business trip. 24 month after-service and no worry on return or refund. ?High speed data transfer?Type C 3.1 Thunerbolt 4 supports 40Gbps data transmission, also support Audio and Mic 2 in 1 port makes listening or talking a breeze. USB 3.0 USB A and USB C port up to 5Gbps data transfer. The built-in SD slot and TF (Micro SD) slot allows for easy access to files from SD and TF memory cards with a super speed of up to 480Mbps. The SD card slot and the TF card slot can be used on the Microsoft surface 9 docking station simultaneous. ?4K HDMI adapter for Surface Pro 9 & Audio Output Port?This Surface pro 9 accessories supports video resolution up to 4K@ 30Hz through the HDMI interface, Microsoft Surface pro 9 hub backwards support 2K/ 1080p/ 720p/ 480p/ 360p resolutions. Freely show your laptop's high-resolution 4K UHD@ 30Hz or full HD 1080P video to HDTV, monitor or projector via HDMI port. Dock for surface pro 9 Delight listening to your favorite music using your wired headphones with the classic 3.5mm cable. ?Triple Display Surface Pro 8 docking station? Triple display modes (4K HDMI + USB-C Thunerbolt 4 + Surface Pro 9/8/X ) Boost your efficiency 3 times. This Surface Pro 9 Hub Adapter allows you to extend 2 monitors which provide more space for work and you can do different project on different monitors. Support Extend Or Mirror Mode, HDMI Resolution up to 4K@30Hz, USB-C Thunerbolt 4 resolution up to 8K@30Hz. Surface pro 9 dock as an ideal Gadget for Video Editor, Photography, Programmer. ?Specially Designed for Surface Pro 9/Pro 8/Pro X?Specifically developed for Microsoft Surface Pro 9, Surface Pro 8 and Surface Pro X, Surface pro 9 docking station turns the 2 USB-C connection into 8 ports: 1X 4K HDMI port, 1X 100W Thunerbolt 4 port (Video Display+Data Transfer 40Gbps+PD Charging), 2 X USB 3.0 port, Type-C(5Gbps data), 1X SD card slot, 1X TF (Micro SD) card slot, 3.5mm Audio/Mic Jack. (*Note: This Surface Pro 9 usb docking station Only compatible with Microsoft Surface Pro 9/Pro 8/Pro X, and please not use an protective case.).