Ravi,
The question is what are you looking for? Overall there needs to be a real reason for this.
You can do what is mentioned above, but it will not show you the contents of the file as being matched just that it was a transfer to the USB device. This is a catch all, but you will probably spend more time "looking' through the events and NOT find anything or give up because of the 'noise'.
If you do a catch all , then make sure to also TRY and use the exclusion list of file types when possible (MP4, MP3, Wav, exe, dll etc)
Also keep in mind that bny default the system will not retain the file for an Endpoint Event. So if you do only look for the USB protocol you will also need to have a response rule to 'Limit the Data Retention" to keep the files for endpoint.
Good luck
Ronak