The Power Mac G4 computer 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:
modem bit rates up to 56 Kbps (supports K56flex and V.90 modem standards)
fax modem bit rates up to 14.4 Kbps
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.