Dell Studio 0C547MA00 Setup Manual page 27

Mute the sound
Turn down the volume
Turn up the volume
Play the previous track or chapter by
pressing the key once
Fast rewind by pressing and holding
the key
Using Your Studio Laptop
Play or pause
Play the next track or chapter by
pressing the key once
Fast forward by pressing and holding
the key
Eject the disc from optional USB/eSATA
optical drive.
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