?Easy to Use?Plug and play, no driver required, LED light can directly see if the surface pro 9 dock Station is working. Simple and atmospheric aluminum shell is easy to dissipate heat and not easily deformed. Small design, can easily fit into computer bags and pockets, all-in-one function suitable for travel and office use. Warm tips: When the computer case is too thick resulting in unstable contact, it is recommended to take off the case to use. ?100M Ethernet Port & 3.5mm Audio Port?100M adaptive RJ45 Ethernet interface, wired network to ensure a more stable network connection, WIFI and wired network switch freely. 3.5mm audio port, with MIC function can receive headphones, connect external 3.5mm interface audio, listen to music, watch video and answer the phone more convenient, to avoid noise and embarrassment. ?High-speed Data Transfer?The USB c 3.1 Thunderbolt 4 port speed transfer up to 40Gbps, support PD charging, support transfer video 4K@60H; two standard USB 3.0 ports support up to 5Gbps transfer rate, maximum read speed of 640MB/s, backward compatible with USB 2.0.Built-in SD card slot and TF (Micro SD) card slot Allows easy access to files from memory cards at ultra-high speeds of up to 480Mbps, compatible with SD, SDXC, SDHC, Micro SD, Micro SDXC, Micro SDHC cards, etc. ?4K HDMI Adapter?This HDMI port supports up to 4K@30Hz video resolution, while backwards supporting 2K/1080p/720p/480p/360p resolution.Support extended and mirroring modes to freely display high resolution 4K@30Hz or Full HD 1080p video from your laptop to HDTV, monitor or projector through the HDMI port, providing you with ultra high definition visual enjoyment. This Surface Pro 9 hub adapter expands 2 displays to provide more space for your work and life. ?8-in-2 Surface Pro 9 Hub Docking Station? Specially developed for Microsoft Surface Pro 9, it expands 2 USB-C connections into 8 ports (2X USB 3.0 ports, 1X 4K HDMI port, 1X Type c 3.1 Thunderbolt 4 port (video + data transfer + PD charging), 1 X 100M Ethernet port, 1 X 3.5mm audio port, 1X TF (Micro SD) card slot, 1X SD card slot. Made from a collection of high-quality materials, Surface Pro 9 accessories are compact and portable, all-in-one for on-the-go travel and office use.