powered hubs or unpowered hubs

Archived from groups: microsoft.public.windowsxp.basics (More info?)

hello

why are powered hubs recommended over unpowered hubs
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More about powered hubs unpowered hubs
  1. Archived from groups: microsoft.public.windowsxp.basics (More info?)

    Because a particular USB port can only support so much current. A powered hub provides the power for all of its connected ports. An unpowered hub is subject to the limits of the single port its connected to.

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    Doug Knox, MS-MVP Windows Media Center\Windows Powered Smart Display\Security
    Win 95/98/Me/XP Tweaks and Fixes
    http://www.dougknox.com
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    "new office 2003 user" <newoffice2003user@discussions.microsoft.com> wrote in message news:A639981E-18CF-44A8-AEE9-4FE8B27FB964@microsoft.com...
    > hello
    >
    > why are powered hubs recommended over unpowered hubs
  2. Archived from groups: microsoft.public.windowsxp.basics (More info?)

    Doug Knox MS-MVP wrote:

    > Because a particular USB port can only support so much current. A powered hub provides the power for all of its connected ports. An unpowered hub is subject to the limits of the single port its connected to.

    Or at least up to the capacity of the hub's "wall wart" power pack.

    Note that some USB peripherals, like printers, tend to have their own
    power sources. It's USB items like keyboards, game controllers,
    mice/trackballs, memory devices (camera memory card readers and thumb
    drives) and some PDA adaptors that use the port's power.
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