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What's a "powered" USB port?

Fresh3 days ago
Mar 15, 202621050 views
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Problem

I'm shopping for a new laptop and many specs list USB ports as "1 powered USB, 2 USB 2.0". What's the difference? Aren't regular USB ports powered, as in capable of powering an external device? Update things are getting confused. I have a netbook which lists a "powered" USB port, and being a netboo…

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Fix for: What's a "powered" USB port?

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Look at this: http://en.wikipedia.org/wiki/USB#Power The "non-powered" USB ports most likely support only "low power" USB devices, ie. ones using less than 100mA of power, like mice or keyboard. Powered ports are needed for external (2.5", bigger ne…

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