Dell Alienware m15 R7 Setup And Specifications page 21

Table 21. List of Macro keys (continued)
Keys
Your computer comes with dedicated keys that enable you to control audio features of the computer with a single key press.
Table 22. List of keys to control audio features
Keys
Description
Description
Mute microphone
Mute speakers
Increase volume
Decrease volume
Keyboard shortcuts of Alienware m15 R7 21