Black Ice

Black Ice is a crafting component in the Fallout 4 add-on Far Harbor.

Characteristics
High-tech computer parts consisting of thin plastic wafers etched with metal wiring. Circuitry is mainly used for high-tech weapon modifications, as well as building turrets and other high-end electronics for settlements.

Uses
Used during Best Left Forgotten as a component for virtual turrets, to defend your indexers against enemy Sentry intrusion countermeasures.