Then the Vertical Dock is fastened to an ordinary VESA arm monitor mount with 4 included M4 screws. When the Surface Pro is gently dropped into the Vertical Dock, it meets up with the magnetically aligned MS Surface Connector providing connectivity to 2 monitors (mini-DisplayPort), 4 USB 3.0 ports, 3.5mm audio, Ethernet, and power. What’s in …
https://www.amazon.com/Surface-Vertical-Docking-Station-Electronics/dp/B078N7TB44

