Why am I not getting video out of Display 3 HDMI? August 18, 2023 16:56 Updated Make sure that the dock is connected with a USB-C to USB-C cable and that your system supports USB-C DP Alt Mode. Related articles Why am I not getting video out of Display 3 HDMI? Why are my displays not working while connected to the VT4500? Will the VT1000 operate on a USB-A 2.0 port? Can a display adapter be used with the VT7000? Can the VT7000 connect to a laptop via USB-A 3.0?