Satellite L645D-S4030 second USB port problem

Hi, I'm having trouble with the second USB port that's connected with the VGA port on my Satellite. I try to use my external hard drive, flash drive, and wireless mouse receiver on this port, but I've noticed that when the external hard drive is plugged in the light flashes on for only a second or two and the port itself never recognizes anything plugged in.
Can anyone help me figure this out? I've looked everywhere for a topic covering this problem and have turned up nothing
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I am attempting to resolve a similar problem on a friend's L655.  Except that no USB device connected to any of the USB ports are recognized.  I do have an unknown device in Device Manager in the USB Controllers section that I have been unable to resolve.
You may just need the driver installed.  Have you tried that?.

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