Apple Power Macintosh 9600 - Manual (Page 91)

Connecting an ADB input device
Your computer has an Apple Desktop Bus (ADB) port, which connects the
mouse and the keyboard to your computer. You can add other input devices,
such as a bar-code reader, graphics tablet, or joystick.
The ADB port is marked with the V icon.
You can connect up to three ADB devices in a chainlike fashion to a single
ADB port. The exact number depends on how much power the devices
require.
Before you attach or remove an ADB device, turn off the computer. Attaching
or removing an ADB device while the computer is turned on could damage
the ADB device or your computer.
IMPORTANT The total power used by all ADB devices connected to your
computer must not exceed 500 milliamperes (mA). Before attaching another
ADB device, check the Technical Information booklet that came with your
computer and the information that came with the ADB device for power
requirements.
ADB port icon
ADB port
91 Connecting Additional Equipment