Re: Problem with an external usb HD - slow usb

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On Mon, Mar 8, 2010 at 8:39 PM, Paolo Galtieri <pgaltieri@xxxxxxxxx> wrote:
> The drives are on different busses. One drive is plugged into a hub the
> other directly into the laptop.

It is possible that the USB port on your computer is USB 2.0 (Full
Speed) but that the hub is just USB 1.1 (High Speed).

USB Mass Storage does work under the 1.1 protocol, but it is so slow
as to be useless for all but very small files, as you have no doubt
observed.

I would suggest asking your friends to let you plug your drive into
their hubs attached to their computers.  If you can find a combination
of hub and computer that operates at an acceptable speed, ask your
friend to let you borrow their hub long enough to try it out on your
own computer.

Put your friend's hub where your own hub is now.  If you then find
that your drive starts working really fast, your next step is to drop
your old hub off at the nearest eWaste recycling center and to buy a
new hub.  They're not expensive, but check the product packaging to
make sure it specifically says USB 2.0 or USB2.

Don Quixote
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http://www.dulcineatech.com

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