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What I say is that MAYBE, his usb port does not provide enough power to CHARGE the reader, not to use it and to exchange data with it.
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I have no qualms with this statement. My issue was that you were inferring that this was the normal operating behavior of USB ports. If your USB port can't provide the current the USB specs say it should, its a problem with the port. If you have a device that needs more juice to charge than the port can provide according to those same specs, its not the fault of that port.
One of the people reading those old BLOG'S you linked understands what I mean:
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The USB specification says that the maximum power that a single device should draw from a single USB port (1.1 or 2.0) is 500mA. If your device draws more than 500mA from a single port then it is the fault of the device, not the USB port!
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EDIT: Did you actually read that second thing you linked or are you giving me random links based on that title?? That article has absolutely nothing to do with what we're talking about....