A Borg drone does use biological brain which can't be replaced, I think. Every machine including brain has a finite age.

For how long can a Borg drone live before dying naturally (death in battle is not natural). Does it depend upon the base species' lifespan? If yes, how long do human based Borg drones live? Or, are Borg drones immortals due to some kind of Borg tech?

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    I always had the impression that the Borg's ability to repair had outstripped any biological or mechanical aging or deterioration. But I may have just made that up...
    – Nerrolken
    Dec 10, 2014 at 20:17


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