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I have an Averatec model#3150p pc notebook.It has a 3 port usb hub but only 1 port works. i.e.:When I plug a device into the 2nd or 3rd port I get error message saying the device has a problem.(unknown device)


Answers :

Dear Friend..
\015\012
\015\012Go to Control Panel=>System => Harware=> Device Manager. Under the "Universal Serial Bus Controllers" delete all USB root hubs & controllers/ ports & then Action=> San for hardware changes That shall freshly install the USB ports on your system & shall work.
\015\012
\015\012Best of Luck..
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