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one of USB port does not work after update 10.9.3
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i have lenovo y550 ideapad, i had 10.9.2 and there was no problem with usb ports but after the update 10.9.3, one of the usb port are not working now. when i connect usb disk, it open up its light but system does not recognize it.


how can i fix that problem?


thanks for the answers...

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