So with a device like my Archos media player (which is, I believe, also based on Linux), the fact that it will charge from any "dumb" USB power supply (eg a car charger) is down to the fact that the device itself is saying something like "I see that something is connected to my USB port but I don't care what it is - if it won't talk to me using a mass storage driver I'll see if I can charge from it"?
If that is the case, couldn't the Reader do something similar, given the appropriate firmware code?
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