Screen mirroring capabilities vary among laptops. 

Refer to the following table for MacBook compatibility:

1. Connect only one HDMI or DP port at a time, as these cannot operate simultaneously.
2. Make sure your macOS version is 15 or later.
3. Connect your laptop using the provided Thunderbolt 5 cable from the "Computer" port on the dock.
4. Try a different display cable or monitor, ensuring the monitor's USB-C port supports video input if using a Thunderbolt port for screen mirroring, and verify the monitor is on the correct input.
5. Try the device with different ports on your MacBook.
6. Disconnect the dock from your computer and all connected devices for at least 5 minutes, then reconnect after rebooting your laptop to test if the issue is fixed.

For Windows laptops, please refer to the following table for display compatibility:

Please follow these troubleshooting steps:
1. Verify whether your laptop supports Thunderbolt 5, 4, or USB 4 and make sure the dock is connected to the appropriate port.
2. Used the included Thunderbolt 5 cable to connect the dock to the port labeled "Computer" on the back of the dock. Other cables may not support display and could prevent the HDMI or DP from working.
3. Update the graphics driver on your laptop to check if it resolves the issue.
4. If possible, try the dock with a different laptop that also supports Thunderbolt 5, 4, or USB4.
5. Test the dock with a different HDMI or DP cable or monitor.
6. Disconnect the dock from your laptop and all connected devices for at least 5 minutes. Afterward, reboot your laptop and reconnect the dock to see if the issue is resolved.