Change volume settings, ringtones, and notification alerts.
INSTRUCTIONS & INFO
ADJUST RING VOLUME: Press the Volume up button or Volume down button on the top of the device to adjust volume as desired. Note: Alternately, you can use the keyboard shortcuts FN + F6, FN + F7, and FN + F8 to adjust volume as desired. To learn more about keyboard shortcuts, visit the Gesture & motion tutorial.
ACTIVATE SILENT MODE: Press the Volume down button until the Silent mode icon appears.
When Silent mode is activated, the Silent  mode icon will display in the Taskbar.