how to checked the usb voltage of my laptop ? low voltage to high voltage usb port.

Discussion in 'PC Hardware' started by christian666, Feb 21, 2013.

  1. christian666

    christian666 MDL Senior Member

    Feb 24, 2010
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    Hi everyone,

    I would like to know if there is a program to check the voltage of my usb port from a laptop.

    I know there are devices that require high voltage and low voltage via usb port.


    Is there a way to check is the device plug into a usb port is using either high or low voltage?

    is there a way to make low voltage usb port to a high voltage usb port?
     
  2. QuantumBug

    QuantumBug MDL Developer

    Mar 7, 2012
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    1,328
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    USB devices usually draw the amount of power needed automatically.
     
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  3. gabris[LT]

    gabris[LT] MDL Senior Member

    Nov 6, 2010
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    usb ports can't change voltage, its fixed 5V, but they can change amperage.. but usually laptop ports are limited to 500mA.