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I don't know how old your system might be or how many USB controllers it has on the motherboard, but understand this...
Theoretically, one USB port can support up to 999 "daisy chained" devices.
With that said...the way a USB port is implemented on a motherboard, manufacturers enable two or four ports to be working off of one USB interface. Those ports you see on the front of your computer are most likely connected to just one USB interface on the actual motherboard and that's why you always see computers with USB ports located together in pairs.
With that in mind, you're USB ports are connected to what is referred to as a "hub"(that motherboard interface), which only outputs so much power. If one device or many devices attached to this "hub" exceed the power output of this "hub" then it will either back down to USB 1.1 speeds or it won't function at all. That is why some USB accessories require their own wall adapter, because the USB can't supply all the necessary power for it.
So one of two things has happened, either your USB port is fried as the gentleman above me said or you introduced a new USB item to the "hub" that surpasses the power requirements of what your USB hub can output once you plug in your mp3 player.
With that said, troubleshoot by unplugging all un-necessary USB equipment and try again. My assumption is that the USB hub is fine but the actual usb port you use might be damaged.
Good luck.
Theoretically, one USB port can support up to 999 "daisy chained" devices.
With that said...the way a USB port is implemented on a motherboard, manufacturers enable two or four ports to be working off of one USB interface. Those ports you see on the front of your computer are most likely connected to just one USB interface on the actual motherboard and that's why you always see computers with USB ports located together in pairs.
With that in mind, you're USB ports are connected to what is referred to as a "hub"(that motherboard interface), which only outputs so much power. If one device or many devices attached to this "hub" exceed the power output of this "hub" then it will either back down to USB 1.1 speeds or it won't function at all. That is why some USB accessories require their own wall adapter, because the USB can't supply all the necessary power for it.
So one of two things has happened, either your USB port is fried as the gentleman above me said or you introduced a new USB item to the "hub" that surpasses the power requirements of what your USB hub can output once you plug in your mp3 player.
With that said, troubleshoot by unplugging all un-necessary USB equipment and try again. My assumption is that the USB hub is fine but the actual usb port you use might be damaged.
Good luck.
Other Answers (2)
Relevance-
Get an external USB power source.
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its fried
1 answer hidden
USB device has exceeded the power limits of it;s hub port?
I have been using the usb port on the front of my cpu for a while for my Samsung MP3 player. Recently, I am unable to do so. I am prompted:
Power Surge on Hub Port
- A USB device has exceeded the power limits of it's hub port. For assistancein solving this, click this message.
I am then prompted to reenable the port, to disconnect the hardware & click resert. I have done this several times, but nothing seems to work.
How do I tackle this problem? I am not very computer savy. Any
help will be very much appreciated.
Thank you.
Power Surge on Hub Port
- A USB device has exceeded the power limits of it's hub port. For assistancein solving this, click this message.
I am then prompted to reenable the port, to disconnect the hardware & click resert. I have done this several times, but nothing seems to work.
How do I tackle this problem? I am not very computer savy. Any
help will be very much appreciated.
Thank you.
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