Power Options - Add or Remove USB Selective Suspend

Brink · Aug 4, 2014

How to Add or Remove "USB selective suspend setting" in Power Options in Windows

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.

For more information, see:

This tutorial will show you how to add or remove the "USB selective suspend setting" setting under USB settings in Power Options for all users in Vista, Windows 7, and Windows 8.

You must be signed in as an administrator to be able to do the steps in this tutorial.

Note

This could be handy if you wanted to set this how you wanted, then remove the setting to prevent other users from being able to change it in Power Options.

EXAMPLE: "USB selective suspend setting" in Power Options

Here's How:

Note

The .reg files below are for the registry key and value below.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\2a737441-1930-4402-8d77-b2bebba308a3\48e6b7a6-50f5-4782-a5d4-53bb8f07e226

Attributes DWORD

1 = Remove
2 = Add

1. Do step 2 or 3 below for what you would like to do.

2. To Remove "USB selective suspend setting" from Power Options

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Remove_USB_selective_suspend_setting.reg

3. To Add "USB selective suspend setting" to Power Options
NOTE: This is the default setting.

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Add_USB_selective_suspend_setting.reg

4. Save the .reg file to your desktop.

5. Double click/tap on the downloaded .reg file to merge it.

6. If prompted, click/tap on Run, Yes (UAC Windows 7/8) or Continue (UAC Vista), Yes, and OK to approve the merge.

7. When finished, you can delete the downloaded .reg file if you like.

That's it,
Shawn

Power Options - Add or Remove USB Selective Suspend

Attachments

Similar threads