The Power Mac G4 has a dedicated slot for an internal modem module. The module is available as a build-to-order option or as a user-installable upgrade. The external I/O connector for the modem is an RJ-11 connector installed on the rear of the computer. The modem has the following features:
The modem appears to the system as a serial port that responds to the typical AT commands. The modem provides a sound output for monitoring the progress of the modem connection.
Note
This developer note does not provide electrical or mechanical specifications for the modem slot.