Troubleshooting Symptom/Cure Tables: System Problems After Startup - 47
USB Problems
USB problems refer to symptoms or issues that may occur with external USB devices
that are attached to the iMac. This could include Apple and/or third-party USB devices.
Possible Cause Possible Fix
Not enough power for the
USB device to function.
The following error message will appear confirming that a
device cannot function at all due to a lack of power. This
lack of power (depending on the device) can be a result
of a disconnected external power source, or not enough
power available from the hub the device is connected to.
The two corrective steps listed in the dialog box (shown
on the next page) provide the user guidance in
troubleshooting these conditions.
USB device experiencing a
partial lack of power.
Similar to the first error message, this error message indicates
a device may not completely function due to a partial lack of
power and gives steps to remedy the problem.