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The "phantom" probably isn't the one you think
Authored by: VRic on Jul 23, '07 03:39:58PM

I suppose the USB 2.0 port showing your iPhone really is one of the 3 external ports, and the "phantom" one (internal) actually is one of the others in the list, probably USB 1.1 if the internal modem is present.

Given there's only 2 USB 2.0 controllers shared among the 4 ports (3 external and 1 internal), it may be possible that all appear as USB 1.1 if the internal modem is present and something USB 1.1 like a keyboard is attached to the other controller.

Maybe your problem and solution have more to do with some glitch between USB 1.1 and 2.0 peripherals trying to grab the controller and only succeeding when the only USB 2.0 peripheral reverts itself to USB 1.1 after you killed the USB 2.0 mode on the host.

If you have other USB 1.1 peripherals (keyboard, old USB hub, etc.), try plugging them to another port to free one of the 2 controllers for USB 2.0.



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