usb milliwatts

Discussion in 'General Electronics Chat' started by aac9876, 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?
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    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
     
  3. n9352527

    AAC Fanatic!

    Oct 14, 2005
    1,198
    4
    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.
     
  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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