If unknown:
On Windows 11, native USB graphics support is limited, so you install the correct driver for the external display to work. hyc usb display driver windows 11
The HYC USB display driver is a specialized software component used by various "plug-and-play" USB display adapters. Unlike standard HDMI ports that use your computer's native video output, these adapters use a proprietary graphics driver to encode a video stream, send it over the USB protocol, and then decode it at the adapter for output to a monitor. How to Install the HYC Driver on Windows 11 If unknown: On Windows 11, native USB graphics
HYC USB Display Driver for Windows 11: Setup and Troubleshooting If unknown: On Windows 11