Mac OS X: Apple System Profiler Modem Information Incorrect or Missing

Symptom

1. Where it should indicate a modem in the Network Overview section, Apple System Profiler indicates an additional Ethernet device with these traits:
• address of 00.00.00.00.00.00
• "PointToPoint" in the Flags field
2. Apple System Profiler may report the presence of a modem that does not exist.

Solution

This symptom does not indicate a hardware failure of the modem.

To troubleshoot modem connection issues, see technical document 106447: "Mac OS X 10.0: How to Gather Modem Troubleshooting Information"

If you suspect you have isolated a hardware issue with your built-in Apple modem, use the Apple Hardware Test software that came with your computer for verification. To identify hardware issues with a non-Apple modem, see the instructions that came with the modem.