Surface Dock Triple Displays, 12-in-1 Microsoft Surface Docking Station with 2 HDMI+VGA+Ethernet for Surface Pro 10/9/8/X/7/6/5/4/3, Surface Laptop 5/4/3/2/1,Surface Laptop Go 3/2/1,Surface Book 3/2/1

Streamline the way you work and connect. New Surface Dock 12-in-1 instantly transforms your Surface into a desktop PC with all the next-gen ports you need. Simply plug in the Surface Connect cable to charge your device and access external monitors, a keyboard, mouse, headphone and more. Surface Dock was built to maximize efficiency.

2 * USB 3.0 ports:up to 5Gbps; keyboards, mice, printers, USB flash drives.2 * USB-C ports:up to 5Gbps; USB-C flash drives, hard drives.1 * 3.5mm Audio Jack:Support audio/microphone 2-in-1; supports simultaneous audio and video streaming.1 * SD card slot:up to 480Mbps; supports SDXC, SDHC, SD, MMC, RS-MMC.1 * Micro SD card slot:up to 480Mbps; supports Micro SD, Micro SDXC, Micro SDHC and UHS-I.1 * RJ45 Ethernet port:100 Mbit/s; Surface without an Ethernet jack can stand by perfectly when there is no wireless network.2 * 4K HDMI port:4K@30Hz; supports extended and mirrored modes.1 * VGA port:1080P@60Hz; supports extended and mirrored modes.1 * 14V 5A power port: Come with the charging adapter; supports charging Surface at high speed while keeping all the functionality of the hub's other ports. Surface Triple Display Modes (HDMI+HDMI+VGA) Increase your efficiency three times, 4K HDMI supports resolutions up to 3840 x 2160 at 30 Hz. The VGA port supports screen resolutions up to 1920 x 1080 @ 60 Hz. *Note: Connect one surface up to 3 screens and achieve three displays (HDMI/HDMI/VGA + surface).
If you need to connect 3 monitors, you need to turn off the Surface screen.

Support mirror mode and extend mode
Surface Triple Display Modes (HDMI+HDMI+VGA) Boost your efficiency three times.
When the three display interfaces are output at the same time, The 2 HDMI ports support all resolutions up to 3840 x 2160 at 30 Hz.

Our product not support use with surface protective case. If you use a protective case, it may cause magnetic connector to not be inserted.
Please check if the magnetic connector is connected correctly, we do not support reverse insertion. Please check the product image for the correct connection. If the magnetic connector is inserted incorrectly, it only have charging function, the other peripherals connected to the Surface pro docking station cannot be recognized.
When you connect the magnetic connector to your surface, please check is the indicator light on the magnetic connector light up? If the indicator light not light up, it will can't be use normally.
Resolution support 4K@60Hz, backward compatible.
The surface dock supports extended and mirrored modes. Please set the copy and expand options of the monitor correctly and make sure that only surface is selected (you can also press Win+P shortcut key).

All the Connections You Need Microsoft Surface Dock 12-in-1 All the Ports You Need 12 Ports can be Used Simultaneously Triple display Surface Docking Station The built-in smart chip avoids overcurrent, overvoltage, short circuit Note: