On Tue, 2011-03-22 at 06:48 +1000, Luke O'Donnell wrote:
> Hi Max,
> 
> So the dell should not draw more than 2.5watts? (5v @ 0.5a). At least that's
> what the USB standard is. If so, it's pretty power-friendly.
> 
That is the old USB 1.0 standard. 
The USB 2.0 standard requires up to 1000 mA to be available.

However, many PDAs ignore these standards and will suck more current
than the standard allows if they can get it, e.g. the iPAQ 3630 spec
sheet says it needs up to 1.4 amps @ 5v.


Martin



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