Apple PowerBook Duo Specifications download pdf (Page 17)

Specifications I/O Interfaces - 5

Apple Desktop Bus

Apple Desktop Bus (ADB) port (recommend maximum of three

low-speed, synchronous ADB devices); mini DIN-4 connector

200 mA maximum current draw for all ADB devices

Serial

Two RS-422 serial ports; mini DIN-8 connectors

Sound

Monaural sound-in port (requires 20 dB attenuation cables and

adapters to accommodate audio equipment with line level

outputs)

Monaural sound output jack for external audio amplifier

Video

DB-15 connector supports Macintosh and VGA monitors (requires

15-pin-to-VGA adapter)

Modem

Pass-through telephone jack for optional internal PowerBook

Express Modem RJ-11 domestic; mini DIN-8 international

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Apple PowerBook Duo Specifications Page 17