I have solved my problem through this steps. 1) start System Information by search in start menu. and find my system manufacturer modal. It was k54L. I go to my asus website to download USB driver for Asus k54l USB 3.0 ports. Donload driver create restore point and install driver Asus k54L USB...
I have Asus x54H Series laptop. when i plug my USB mouse or dongle then its jus supply power but driver of my usb mouse and dongle not installed, this is my left side port of laptop. All USB device work on my right - side USB port but somehow not working in left port. Any one can help me.
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