3-in-1 USB C Adapter: USB-C to VGA adapter USB C to DVI adapter or USB C to HDMI adapter - USB-C multiport video adapter supports 4K on HDMI output Portable USB-C dongle travels with your laptop - USB C display adapter connects your BYOD laptop to a provided VGA DVI or HDMI display - USB video adapter works with your Thunderbolt 3 computer like a USB C hub for video Use the USB Type C adapter to connect a display as a secondary monitor