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    Why USB consumes so much power

    xin.zhang@tpa-na.com

      Hi

       

      The USB port on the Edison/Arduino breakout board really consumes quite a lot of power. When we plug in a device(such as USB flash driver, USB-Serial adapter, USB-HCI device), even without any operation, we observed the power consumption increased by 200MW -  300MW. Is this normal? Anyone knows how to reduce it. Thanks in advance.

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