microsoft / microsoft/Windows-driver-samples
usbview reports different USB device power state from device manager
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Since Dec 17, 2025.
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Description
This issue stems from my question https://stackoverflow.com/questions/73490266/retrieve-windows-usb-device-power-status-from-the-command-line
I have tried checking the current USB device power state of a random device on my system, here Realtek USB 2.0 Card Reader.
Windows (10) Device Manager/ [right-click device node/Properties]/ Details/ Property: Power data/ Value: Current power state reports state D0:
If I use usbview to inspect the same device (where there are no physical changes, such as inserting a card, of the device state), I get D2 for the device power state instead:
Is this expected behavior - and if so, shy does it happen?
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