Crucial Warning: There are dozens of fake "driver download" websites that claim to offer the HYC USB Display Driver but instead serve malware, adware, or outdated files (e.g., DriverFix, DriverBooster, or unknown .exe files). Do not use these.
Go back to Device Manager. Expand "Display adapters." You should see "DisplayLink USB Graphics" or "HyC USB Graphics." Expand "Universal Serial Bus controllers." You should see "DisplayLink DL-3xxx" or similar. If you see a yellow exclamation mark, the driver failed to install. hyc usb display driver
Before downloading, plug in your USB adapter. Open Device Manager (Right-click Start button > Device Manager). Look under "Universal Serial Bus devices" or "Other devices." If you see "USB Display Adapter" or "DisplayLink," you likely need the DisplayLink driver. If you see "MCT Trigger," you need an old MCT driver. Crucial Warning: There are dozens of fake "driver