probekits

Usb selective suspend disconnects devices

A device disappearing after idle or sleep needs a wake and connection log before changing power settings.

Run the check

  1. Record the time to failure and whether the OS reports a reconnect after wake.

  2. Compare direct connection with the original hub or dock.

  3. Check current device and Windows power settings for that model, then change one documented option only.

Official reference: Microsoft USB selective suspend

Read the result

A failure tied to one hub or wake path does not justify disabling all USB power saving.

Limits and next step

Microsoft recommends keeping selective suspend enabled by default; the browser cannot inspect the USB driver's power state.

Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.