Re: USB power?

[Don <dr2@xxxxxxxx>]

Power draw of the drive excedes that available via USB port?  Kinda hard to 
imagine me pushing the 400gig externals I use for removeable backups from a 
USB power stream...

Don in DC



At 05:27 PM 12/28/2005 -0600, you wrote:
> Folks:
>
> Anyone know why some external USB hard drive chassis need external power
> and some don't?
>
> A few months ago I bought a USB 2 drive chassis for a 2.5" laptop drive.
>  I was quite disappointed when I found out it required either two USB
> connections or a power brick (larger than the drive itself).  I returned it.
>
> The other day I found a similar drive chassis that didn't have a power
> plug.  It took it's power directly from the USB bus.  I picked it up
> ($25 at compusa) and it works fine.
>
> So my question is ... why did the first one require extra power and the
> second one doesn't?  They were both driving the same hard drive.
>
> Thanks!
>
> david
>
>
>
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