Apple Pro Speakers: "Device Cannot Be Recognized" Alert

Symptom

If the Apple Pro Speakers are not fully inserted into the Apple Speaker sound output port ("mini-jack"), an alert box with this message appears:

"The device plugged into the Apple speaker mini-jack cannot be recognized. Remove the plug from the jack. Then plug it back in and make sure it is fully inserted."

Figure 1 Alert Message under Mac OS X 10.1.2

Figure 2 Alert Message under Mac OS 9.2.2

Solution

• Follow the instructions in the alert message and remove the speaker plug from the sound output port, then fully reinsert the plug.
• See technical document 31314 "Apple Pro Speakers: No Sound From Speakers" for further troubleshooting.