What does "USB selective suspend" mean?

Anonymous
2010-10-14T06:39:16+00:00

In Windows 7, Power Options->USB Settings->USB selective suspend setting, what does "USB selective suspend" mean?  Also, given that there is only one setting, why does it say "USB Settings" instead of "USB Setting"?

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2011-02-17T03:53:10+00:00

A USB device driver can send a message to windows telling it to idle the device.  This puts the device in a low-power state (the suspend state).  When a USB device is suspended, windows does not wait for it to respond before entering a sleep or hibernate mode.  If you disable this feature, the system will simply return a failure to the driver when the driver attempts to enter suspend state.  If the driver complies with Microsoft guidelines, it will simply retry the idle request at every expiration of its idle timer.

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  1. Anonymous
    2012-05-07T20:56:53+00:00

    dude, where do you think Google Searches take you?... places like this!; don't waste the space telling people to Google it. You think someone would come here before typing it in Google?!

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  2. Anonymous
    2012-06-01T21:11:41+00:00

    I just thought I would say that I found this page through google. Thank you for the answers.

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  3. Anonymous
    2012-06-06T16:10:25+00:00

    Why would a USB device driver send a message to Windows telling it to idle the device? Could a mouse or keyboard have such functionality? Would having this USB selective suspend enabled allow the keyboard or mouse to freeze up by going into a suspended state? I'm looking at this because I'm troubleshooting problems involving the freezing of both my keyboard and mouse at irregular intervals.

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  4. Anonymous
    2012-06-19T00:31:07+00:00

    dude, where do you think Google Searches take you?... places like this!; don't waste the space telling people to Google it. You think someone would come here before typing it in Google?!

    Amen

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