Apple Macintosh Performa 570 series - Manual (Page 38)

Using the sound control buttons on your computer
There are two sets of buttons on the front of your Macintosh. The set on the
right (marked with the - icon) is for sound control. You can use these buttons
to increase or decrease the volume of the sound your Macintosh plays:
m Press the button at the top to make the sound louder.
m Press the button on the bottom to make the sound softer.
You can also adjust the sound by using the Sound control panel. For more
information about adjusting sound, see the “Sound” topic of Macintosh
Guide, available in the Guide (h) menu.
Sound
control buttons
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