What does the [Out of Range] message mean on the Xiaomi 4K Monitor A27Ui during use?

The [Out of Range] message appears on the Xiaomi 4K Monitor A27Ui because the resolution setting is incorrect.
To fix this issue, please refer to the following steps:
  1. Disconnect the Xiaomi monitor from your computer or video output device;
  2. Connect your computer to a different monitor that can display the current output settings;
  3. On your computer, open the display settings and reduce the resolution and refresh rate. The recommended setting is 3840 × 2160 resolution at 60 Hz refresh rate;
  4. Once the resolution and refresh rate have been adjusted, reconnect the Xiaomi 4K Monitor A27Ui;
  5. If the above steps do not resolve the issue, please contact after-sales service for further assistance and professional inspection. A repair will be necessary in this case.