Disable XHCI power saving by commandline

Hi sir,

Do you have comment the function impact after disable power saving for USB root hub?

Hello YongY Li, welcome to Microsoft Q&A forum.

I have come across two threads that provide working solutions for this exact issue. Both scripts should be run in an elevated (Administrator) PowerShell window.

(The scripts are changed to the modern syntax)

Option 1: Apply to all USB devices

From Reddit discussion :

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Get-CimInstance -Namespace root\wmi -ClassName MSPower_DeviceEnable |
Where-Object InstanceName -like '*USB*' |
Set-CimInstance -Property @{Enable = $false}

This command disables the “Allow the computer to turn off this device to save power” setting for all USB-related devices.

Option 2: Target only USB Root Hubs

From Microsoft Q&A thread:

Get-CimInstance Win32_USBHub | ForEach-Object {
	Get-CimInstance MSPower_DeviceEnable -Namespace root\wmi |
		Where-Object InstanceName -like "*$($_.PNPDeviceID)*" |
		Set-CimInstance -Property @{Enable = $false} }

This version is more selective and only applies to USB Root Hubs. You can reverse the change by replace $false with $true.

Functional impact after disabling power saving

• It prevents unwanted USB disconnections and improves wake reliability for devices like keyboards, mice, and docks.
• There is a minor increase in idle power consumption (usually less than 1 watt on desktops, slightly more noticeable on laptops).
• No stability or compatibility issues have been reported across many deployments.

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