How does the rescuer r9000k turn off the ambient light?

The rescuer r9000k can turn off the ambient light by pressing "Fn" and adding a down arrow to turn it to the darkest, or through the setting of the software icue.

The rescuer Y9000K RGB keyboard supports the setting of lighting technicians, and can customize the keyboard area, power key, side and back vents, side interface and Y Logo on the A side, and use Corsair iCUE app to customize the lighting.

Adjust the volume of the player to affect the lighting range of the keyboard. Simply put, there are many loud keys. Turning off the volume of the player will disable the keyboard light.