Dell Command | Configure Version 3.0 Command Line Interface Reference Guide

• enable — Enables the built-in speaker. The speaker is enabled at the single system-supported volume. This should be used only if the Speaker Volume Low/Medium/High attributes are not supported by the system.
• disable — Disables the built-in speaker.
• low — Sets the volume of the built-in speaker to low.
• medium — Sets the volume of the built-in speakers to medium.
• high — Sets the volume of the built-in speakers to high.

C:\>cctk --speakervol=low
                                                      speakervol=low