Microsoft KB Archive/934644

= Error message when you wake up a Windows XP-based computer from hibernation or from standby: &quot;Power Surge on Hub Port: A USB Device has exceeded the power limits of its hub port&quot; =

Article ID: 934644

Article Last Modified on 4/5/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
When you wake up a Microsoft Windows XP-based computer from hibernation or from standby, you may receive the following error message:

Power Surge on Hub Port: A USB Device has exceeded the power limits of its hub port.

This error message is displayed even if there are no USB devices connected to the computer.



WORKAROUND
To work around this issue, disable the USB 2.0-enhanced host controller.

Note When you disable the USB 2.0-enhanced host controller, you lose USB 2.0 functionality. That is, you revert to USB 1.1 functionality.

To disable the USB 2.0-enhanced host controller, follow these steps:
 * 1) Right-click My Computer, and then click Manage.
 * 2) Under Computer Management (Local), click Device Manager.
 * 3) In the Device Manager pane, expand Universal Serial Bus controllers.
 * 4) Right-click the USB 2.0-enhanced host controller, and then click Disable.

Note The name of the USB 2.0-enhanced host controller may vary.
 * 1) When you receive the confirmation message, click Yes.
 * 2) Close Device Manager.

Additional query words: USB2 ubs

Keywords: kbtshoot kbusb kbexpertiseinter kbprb KB934644

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