usb milliwatts

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Discussion in 'General Electronics Chat' started by aac9876, Apr 15, 2007.

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  1. Apr 15, 2007 #1
    aac9876

    Thread Starter Active Member

    Dec 9, 2006
    124
    0
    about how many milliwatts does a common usb port push,
    like thru a usb wifi adaptor?
     
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  2. Apr 15, 2007 #2
    hgmjr

    Moderator

    Jan 28, 2005
    9,030
    215
    You can find out a lot of infromation on the USB 2.0 spec at www.usb.org.

    It looks as though 2.5 watts is about the max.

    hgmjr
     
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  3. Apr 16, 2007 #3
    n9352527

    AAC Fanatic!

    Oct 14, 2005
    1,198
    5
    100mA at 5V normally with standard descriptor. Up to 500mA max. at 5V available with successful negotiation only. So that's 0.5W and 2.5W respectively like hgmjr posted above.
     
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  4. Apr 18, 2007 #4
    aac9876

    Thread Starter Active Member

    Dec 9, 2006
    124
    0
    if you ad a 1 watt amp to either one, would it be more powerful or not
    because it is already over 1 watt...??? thanks
     
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