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Which is actually a really hideous hack since you're not supposed to draw power from the USB port without actually telling the host/hub how much you'll be drawing. A lot of the devices actually try to draw more than the 500mA that you're allowed on each port if it's self powered.
Only if the device you're plugging in doesn't have a USB slave. My phone and GPS have USB interfaces, so it's fine.
The ugly hacks are the lighter plugs and wall warts that just have a powered port with no other electronics.
Speaking of hacks, I have a bus-powered hub that works just fine as a power splitter in the car.
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-Zandr
Mk.IIa #010101243 currently getting a 500GB SSD. More spares in the shed.
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