Mute
• Volume: Adjusts the output volume level.
• Mute: Mute the output volume.
• Source: Adjusts audio source to “Line In” or “HDMI / MHL” (only available
for HDMI / MHL input, and MHL only for PB278QR);
Adjusts audio source to “Line In” or “DisplayPort” (only available for
DisplayPort input).
5. PIP/PBP Setting(Only for PB278QR)
The PIP/PBP Setting allows you to open up another sub-window
connected from another video source besides the main-window from
your original video source.
PB278