How to eject USB drive?

I have a USB drive that doesn't want to eject.  It get the error that it is in use and can't be ejected.  Yet, nothing is using it.
I'm trying to eject through Finder.  Any ideas how to resolve this?

Worked just fine.  Thanks.
Funny how Apple tech support can never solve anything.  After an hour, they'll finally say, force quit everything, restart then restore to factory defaults.  That's the common workflow.  Get out the big hammer.

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