Macbook 13'' - USB DRAWING TOO MUCH POWER (No Devices Attached)

Discussion in 'Mac Basics and Help' started by Stilatos, Dec 18, 2008.

  1. Stilatos macrumors newbie

    Dec 18, 2008
    Hello All! :)

    I constantly get the message on boot USB device is Drawing too much power. The Device will be deactivated

    and I can not use any USB devices. :(

    The message appears on Boot and both USBs have no device attached. Plugging the mouse i see that the red light does not even appear, no question about iPod-iPhone ... iSight, Keyb, trackpad, play fine

    The thing is that when I Bootcamp to XP and I unistall the devices, PnP sees them again and installs them making me assume that is a power issue or sth like that because the Motherboard still sees the 2 USB...

    I did PWR, SMU reset etc to no avail ...

    So, I have 2 questions the chips that control the power to the USB hub can be changed on a Macbook 13 or should I accept that I can not use my USBs ever again?:confused:

    Please give advice because in Greece they charge you even for giving you this information ...
  2. misterredman macrumors 6502a


    Oct 3, 2007
    Check visually the contacts of the USB ports. Maybe the device damaged the contacts, thus mking it draw too much power.

    I doubt you will be able to substitute the USB chip easily. Take a look here for what you can do yourself:
  3. Stilatos thread starter macrumors newbie

    Dec 18, 2008
    Thank you misterredman

    Valuable site indeed....

    I am a little pesimisistic that nothing can be done though...

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