Samsung M55 - Manual (Page 17)

1-13 Chapter 1. Getting Started
Adjusting the Volume
■ Adjusting the Volume using the Volume Control Button
Adjust the volume by using the Volume Control Button ( ).
■ To adjust using keyboard
Press <Fn>+< > or <Fn>+< > from the keyboard.
■ Using the Volume Control Program
On the taskbar, click the Volume ( ) icon, and adjust the slide bars.
For advanced volume control options, double-click the Volume ( ) icon, and
adjust the settings in the [Master Volume] dialog.
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When you turn the system on, a booting noise may occur.