Having problems with your Acer Aspire One PC Notebook ?

Power surge on hub port a usb device has exceeded the power limits of its hub port there is nothing connected to my computer


Answers :

I don't know how old your system might be or how many USB controllers it has on the motherboard, but understand this...
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\015\012Theoretically, one USB port can support up to 999 "daisy chained" devices.
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\015\012With that said...the way a USB port is implemented on a motherboard,\015\012manufacturers enable two or four ports to be working off of one USB\015\012interface. Those ports you see on the front of your computer are most\015\012likely connected to just one USB interface on the actual motherboard\015\012and that's why you always see computers with USB ports located together\015\012in pairs.
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\015\012With that in mind, you're USB ports are connected to what is referred\015\012to as a "hub"(that motherboard interface), which only outputs so much\015\012power. If one device or many devices attached to this "hub" exceed the\015\012power output of this "hub" then it will either back down to USB 1.1\015\012speeds or it won't function at all. That is why some USB accessories\015\012require their own wall adapter, because the USB can't supply all the\015\012necessary power for it.
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\015\012So one of two things has happened, either your USB port is fried or you introduced a new USB item to the "hub"\015\012that surpasses the power requirements of what your USB hub can output\015\012once you plug in your mp3 player.
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You can troubleshoot by unplugging all un-necessary USB\015\012equipment and try only that port again. My assumption is that the USB hub is fine but\015\012the actual usb port you use might be damaged.
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\015\012Good luck.
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