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ITsVISTA KB-Link: KB973418

USB selective suspend mode does not work as expected after a power transition on a computer that is running Windows Vista or Windows Server 2008

Consider the following scenario:

  • You enable the USB selective suspend” mode on a computer that is running Windows Vista or Windows Server 2008.
  • The computer switches from battery power to AC power, and then switches back to battery power.

In this scenario, USB selective suspend mode does not work as expected. Therefore, the computer consumes more power than necessary.

This problem occurs on certain hardware.

There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB973418.

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