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Windows 7: USB Selective Suspend - Turn On or Off



USB Selective Suspend - Turn On or Off

How to Turn On or Off "USB Selective Suspend" for Idle USB Devices
Published by Brink
27 Feb 2011
Published by

How to Turn On or Off "USB Selective Suspend" for Idle USB Devices


information   Information
The USB selective suspend feature allows the hub driver to suspend an individual USB port without affecting the operation of the other USB ports on the hub. Selective suspension of USB devices is especially useful in portable computers, since it helps conserve battery power. Many devices, such as fingerprint readers and other kinds of biometric scanners, only require power intermittently. Suspending such devices, when the device is not in use, reduces overall power consumption. More importantly, any device that is not selectively suspended may prevent the USB host controller from disabling its transfer schedule, which resides in system memory. DMA transfers by the host controller to the scheduler can prevent the system's processors from entering deeper sleep states, such as hibernate.

This will show you how to turn on or off USB selective suspend to automatically power down idle USB devices in Windows 7 and Vista.

For more information, see: USB Selective Suspend (Windows Driver Kit)





Here's How:
1. Open the advanced power settings for your selected power plan. (see screenshot below)
USB Selective Suspend - Turn On or Off-advanced.jpg
2. To Turn On USB Selective Suspend
A) Expand USB settings and USB selective suspend setting, set the drop down menu setting to Enabled, and click on OK. (see screenshot below)
NOTE: This is the default setting.
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B) Go to step 4.
3. To Turn Off USB Selective Suspend
A) Expand USB settings and USB selective suspend setting, set the drop down menu setting to Disabled, and click on OK. (see screenshot below)
Name:  Disable.jpg
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4. Close the Edit Plan Settings window. (see screenshot below step 1)
That's it,
Shawn





.

06 Dec 2012   #1
Brogues

Windows 7 64 bit
 
 

OK thanks, I have switched off both in battery and plugged in. If this works(!) what will it prove exactly - so I can report back to Dell? Of course, I won't know for a while because the crashes are so random. Thanks again

My System SpecsSystem Spec
.

06 Dec 2012   #2
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Brogues,

The green information box at the top of the tutorial can give you more information about what the USB selective suspend feature is and does.

This tutorial just allows you to turn it on or off at will.

If turned off, the Windows will not be able to only suspend individual idle USB devices.

Hope this helps some,
Shawn
My System SpecsSystem Spec
17 Jun 2013   #3
Melissa

Windows 7 Home Premium 32bit
 
 

I am only new to wishing to adjusting power plans - it is on default - if you wish to disable the External Hard Drive do you follow the instructions above to put it to sleep with the rest of the computer.

Or is it best to post in the forum


Attached Thumbnails
USB Selective Suspend - Turn On or Off-power-settings.png  
Attached Images
 
My System SpecsSystem Spec
17 Jun 2013   #4
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Melissa,

This setting is not related to the sleep computer setting.

Think of this setting like the turn off idle hard drives setting.

The USB selective suspend feature allows the hub driver to suspend an individual USB port without affecting the operation of the other USB ports on the hub. If set to be disabled, then all USB ports would be suspended instead of only idle ones.

If you like, the link below has more in-depth information about it.

USB Selective Suspend (Windows Drivers)

Hope this helps,
Shawn
My System SpecsSystem Spec
19 Jun 2013   #5
Melissa

Windows 7 Home Premium 32bit
 
 

I just want my USB drive to power down - I will have a look at what I can find out on how to power them down - I noticed they do not power down until the computer sleeps.

Thanks for your assistance.
My System SpecsSystem Spec
19 Jun 2013   #6
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

You're welcome. Does it have a power switch for when you do not plan on using it?
My System SpecsSystem Spec
19 Jun 2013   #7
Melissa

Windows 7 Home Premium 32bit
 
 

No - One is generic brand - I am going to see if it has included software. Or anything the good old internet can assist me with.

Thanks for this helpful page. Any issues I will post on the discussion board.
My System SpecsSystem Spec
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 USB Selective Suspend - Turn On or Off




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