Apple twentieth anniversary mac Servicehandbuch
Connecting an ADB input device
Your computer has an Apple Desktop Bus (ADB) port, which connects the keyboard and trackpad to
your computer. You can add other input devices, such as a mouse, numeric keypad, bar-code reader,
graphics tablet, or joystick.
your computer. You can add other input devices, such as a mouse, numeric keypad, bar-code reader,
graphics tablet, or joystick.
You can plug an additional ADB device into the extra ADB port on the keyboard. You can also connect
up to three ADB devices in a chain to a single ADB port. The exact number of devices possible in a
chain depends on how much power the devices require.
up to three ADB devices in a chain to a single ADB port. The exact number of devices possible in a
chain depends on how much power the devices require.
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 Appendix D, “Technical
Information,” and the information that came with the ADB device for power requirements.
Information,” and the information that came with the ADB device for power requirements.
1
Shut down the computer.
Attaching or removing an ADB device while the computer is turned on could damage the ADB device
or your computer.
or your computer.
2
Plug the additional ADB device into the extra ADB port on the keyboard.
The ADB port is marked with the V icon.
3
Start up the computer.
ADB port
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