📎 AI Summary:
The original poster is trying to identify which USB device is waking their Windows system, as indicated by the `powercfg -lastwake` command pointing to a USB Root Hub with a specific instance path. They’ve noted multiple Root Hubs in Device Manager and are seeking a way to pinpoint the responsible device. A responder suggests checking the properties and device instance paths in Device Manager or using USBView for more detailed USB device information. The discussion centers on troubleshooting wake source identification, with helpful tips provided.
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k3tr4b

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Aug 2, 2019
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Thread Author #1
This is what I'm seeing:
C:\Windows\system32>powercfg -lastwake
Wake History Count - 1
Wake History [0]
Wake Source Count - 1
Wake Source [0]
Type: Device
Instance Path: USB\ROOT_HUB20\4&232151f9&0
Friendly Name:
Description: USB Root Hub
Manufacturer: (Standard USB Host Controller)
Click to expand...
How can I trace down who 4&232151f9&0 is?
Under Device manager I can see (5) ROOT_HUBs so that doesn't help. All of them removed allow under power management.
Any ideas how to precisely find out which one is responsible?
Thank you in advance.
 

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Neemobeer

Neemobeer

Windows Forum Team
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Jul 4, 2015
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8,995
#2
In device manager if you look at the properties on the Root Hubs you can match the Device instance path. You can also download USBView for more usb device details.

USBView - Windows drivers
 

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