Power surge on hub port a usb device has exceeded the power limits of its hub port there is nothing connected to my computer
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
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 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.
You can troubleshoot by unplugging all un-necessary USB
equipment and try only that port again. My assumption is that the USB hub is fine but
the actual usb port you use might be damaged.
Mar 12, 2009 |
Acer Aspire One PC Notebook