Re: [linux-usb-devel] USB devices fail unnecessarily on unpoweredhubs

From: Alan Stern
Date: Fri Jun 02 2006 - 11:10:37 EST


On Thu, 1 Jun 2006, David Liontooth wrote:

> What are the reasons not to do this? What happens if a USB stick is
> underpowered to one unit? Nothing? Slower transmission? Data loss? Flash
> memory destruction? If it's just speed, it's a price well worth paying.

I do wish people would read the earlier messages in this thread before
posting. Go back and look at this one:

http://marc.theaimsgroup.com/?l=linux-kernel&m=114918113822427&w=2

Trying to draw too much current from an unpowered hub can and does cause
data loss.

Alan Stern

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