https://screenrant.com/star-trek-first-contact-borg-enterprise-unanswered-questions/

Star Trek: First Contact saw the USS Enterprise-E infested by the Borg. What happened to all of the Borg tech left behind on Picard's ship?

There were scenes cut out where Geordi had the remains of the Borg Queen and he said that the remains and Borg tech were all going to the Daystrom Institute.