Apple PowerBook G3 - Manual (Page 47)

You can adjust sound output quality in the Monitors & Sound control panel.
(For instructions, see the “Sound” topic area of Mac OS Help, available in the
Help menu.) The computer automatically selects the sound output source. If
an external device, such as headphones, is connected, sound is routed there; if
no external output device is connected, sound plays through the computer’s
four speakers.
You can also use the Control Strip to adjust sound volume.
Connecting a mouse, keyboard, or other ADB device
You can connect a mouse, keyboard, graphics tablet, or other Apple Desktop
Bus (ADB) device to the ADB port on the left side of the computer’s case,
behind the PC Card slots. The ADB port has a small cover, which you open
to connect the device.
IMPORTANT You must shut down the computer or put it in sleep before
connecting an ADB device.
Connecting other devices
For instructions on connecting a device not discussed in this chapter—for
example, networking hardware—refer to the manuals that came with
the device.
V Apple Desktop Bus
(ADB) port
47 Connecting Additional Equipment