Hello Keith,
This could be from AutoPlay trying to auto open/run something from the USB that doesn't have a default app assigned to it.
As a test, turn off AutoPlay below to see if it stops.
This tutorial will show you how to turn on or off AutoPlay for all media and devices in your account in Windows 11. AutoPlay lets you choose an action for different kinds of media when you plug in a device or insert media. You can set AutoPlay to open different kinds of content, such as photos...
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