How to Remove Unused USB Device Links
Use this procedure if a USB device is removed while the system is powered off.
It is possible that removing the USB device while the system is powered off will leave
device links for devices that do not exist.
Steps
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Become superuser.
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Close all applications that might be accessing
the device.
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Remove the unused links for a specific USB class.
For example:
Or, just remove the dangling links: