This Seeking Tech guide will explain how you can mute the beep sound on the PS5 Pro.
For the first step, you need to head over to the Settings menu from the home screen.
Next, you need to select the System option.
You then need to select Beep and Light.
Afterwards, you can select the Volume option if you want to adjust the volume level of the beep.
If you want to completely mute the beeping noise, then you need to enable the Mute Beep Sound setting.