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Question: Back up device error message

error message when trying to back up time machine with external drive - "USB Accessories Disabled"? Unplug the accessory using too much power to reenable USB devices.


Have used the same external drive since December then yesterday get this error so unable to back-up.


Thanks, Jan

MacBook Pro with Retina display, iOS 11.2.5

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May 26, 2018 11:39 AM in response to fotobuffflorida In response to fotobuffflorida

Hello fotobuffflorida,

Thank you for using Apple Support Communities!

I understand from your post that you are receiving an error on your Mac that states. "USB Accessories Disabled." The following article has information which addresses this type of issue which you may find helpful:

Powering peripherals through USB - Apple Support

If you have a USB peripheral that's acting unexpectedly—such as not turning on or not being recognized by the computer—the peripheral might require more power than is available. To fix the issue, try one of these options:

  • Connect the device directly to your Mac rather than through a hub.
  • Use a USB hub that comes with a power adapter.
  • Check to see if the peripheral offers the ability to connect to more than one USB port at once.
  • Find out if the peripheral comes with a power adapter.
Best Regards.

May 26, 2018 11:39 AM

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Question: Back up device error message