5 Replies Latest reply: May 9, 2013 10:44 AM by Lark.Landon
Dean4e Level 1 Level 1 (0 points)

To prevent damaging your computer, the USB device drawing too much power has been disabled. Other devices may have also been disabled. When you disconnect the device drawing too much power, your other USB devices will be enabled again.

now this happens ever time i turn on the computer andno i dont have anything plugged into the usb any of them...also is there such a device as firewire from the macbook pro 13" to a hub that can access usb drives etc?

Hardware Overview: bought Feb 2010

 

Software  Mac OS X Lion 10.7.5 (11G63)

 

  Model Name:          MacBook Pro

  Model Identifier:          MacBookPro7,1

  Processor Name:          Intel Core 2 Duo

  Processor Speed:          2.4 GHz

  Number of Processors:          1

  Total Number of Cores:          2

  L2 Cache:          3 MB

  Memory:          4 GB

  Bus Speed:          1.07 GHz

  Boot ROM Version:          MBP71.0039.B0B

  SMC Version (system):          1.62f7

  Serial Number (system):          W8******ATM

  Hardware UUID:          ****

  Sudden Motion Sensor:

  State:          Enabled

 

<Edited By Host>


iPod touch, iOS 4.2
  • 1. Re: USB faulty?
    Baby Boomer (USofA) Level 9 Level 9 (55,575 points)

    Are you using a powered usb device?  If not, you should be.

     

     

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

  • 2. Re: USB faulty?
    Dean4e Level 1 Level 1 (0 points)

    nothing plugged into the mac book

  • 3. Re: USB faulty?
    Baby Boomer (USofA) Level 9 Level 9 (55,575 points)

    Dean4e wrote:

     

    nothing plugged into the mac book

     

    You previously stated:

    this happens ever time i turn on the computer andno i dont have anything plugged into the usb

     

    When you get the usb error message, you are now saying no devices including the usb hub are connected to your MBP?

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

  • 4. Re: USB faulty?
    Dean4e Level 1 Level 1 (0 points)

    Thanks for your reply maybe I did not make it clear I get the error when nothing is plugged in to the macbook, and ever time i boot the nacbook this disables the usb ports .

  • 5. Re: USB faulty?
    Lark.Landon Level 1 Level 1 (35 points)
    1. Shut down the computer.
    2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
    3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
    4. Release all the keys and the power button at the same time.
    5. Press the power button to turn on the computer. 
      Note
      : The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

     

     

    System Management Controller Reset

    HT3964