An interlink node was a form of bionetic technology implanted within every Borg drone, which enabled communication with other drones. In 2368, after their Borg sphere crashed on Planet 1865-Alpha, Seven of Nine, fearful of being abandoned, injected three other drones who had survived with her with nanoprobes that created new organic interlink nodes in their left parietal lobes. This resulted a new neural link between them, which persisted even after the three were later freed from the Borg Collective. (VOY: "Survival Instinct")