User Guide

Mac mini Troubleshooting - 31
Symptom Charts
Ports
The FireWire or USB port is not recognizing devices
1. Completely shut down, then press the power button to start the computer.
2. Use Software Update in Mac OS X system preferences to verify that the latest
software is installed.
3. Use Apple System Profile to verify that the computer is recognizing the bus.
4. For USB, test ports with a compliant keyboard or mouse.
5. For FireWire, test by connecting another computer in FireWire Target Disk Mode.
Refer to article 58583: How to Use FireWire Target Disk Mode.
6. Verify that drivers are installed properly for third party, if needed.
7. Try a different cable.
8. Try known-good device.
9. If self-powered make sure that the power supply is connected and device's LED
indicates that it is getting power.
10. Replace logic board.