If the LED strips do not work as expected even though Ambiglow is activated, this could be due to the Windows Dynamic Lighting settings. According to the user manual, enabling Dynamic Lighting in Windows may affect the Ambiglow function of the monitor. To check this, navigate to Settings > Personalisation > Dynamic Lighting in Windows 11 or later and disable this function to ensure Ambiglow is working properly.
According to our further research, this monitor does not have speakers.