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Is this true with a USB 3.0 port?

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I realize a USB 2.0 port can only supply 500mA, but 3.0 should be able to supply up to 900mA. Based of the spec the requirements are 200mA @ 9V or 1.8W so that would be 360mA at 5V. Is there a requirement for the higher voltage then? The input range on the power connector does say 7-30VDC.
asked Oct 17, 2016 in RF Solutions and XBee by young New to the Community (0 points)

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1 Answer

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The current listing of the radio is the peak current avg. while it is transmitting. What you don't see is the slew rate in which this current is required.

While a USB 2.0 port should be able to provide the required current, no all of them do. So to be safe, especially on laptops, use the external power source.
answered Oct 17, 2016 by mvut Veteran of the Digi Community (12,791 points)