USB Ports are not working.

I have a trash can mac that has non functional USB ports. There is 5v at the ports but when any known good device is plugged into them it is not recognized. I already replaced the IO board and it did not fix the issue. Anyone seen this issue before and know what might be the cause? The unit works perfectly otherwise..

Ответ на этот вопрос У меня та же проблема

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The I/O part of the USB port is independent of the USB ports power services.

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