In [this answer][1] to https://scifi.stackexchange.com/questions/67229/why-do-the-borg-have-physical-computer-interfaces/, the poster states:

> As mentioned by MarvelX42, when assimilating a ship that uses screens, it makes sense to just keep using those screens rather than to re-program the whole ship to bypass them. This is especially compelling since we see "Borg consoles" much more often on assimilated ships, like the Enterprise-E, than on native Borg constructs, like the Cubes, where Drones are more commonly locked into their docking stations.

What is the *final or end state* of a starship of non-Borg origin that has been assimilated by the Borg? In *First Contact*, we see an attempt to assimilate the *Enterprise-E* in which the Borg interface their own systems with the *Enterprise's* existing systems, but the attempt is stopped before it is completed and so we do not find out what would have happened if it had been completed.

When a ship has been fully assimilated, what happens to it?

 - Is it converted into a Cube or other Borg ship design (e.g. existing Cubes might have remnants of whatever ship they were originally deep down somewhere in their cores, or they might become [Cubes of Theseus](https://en.wikipedia.org/wiki/Ship_of_Theseus))?
 - Does it become a Borg-mod version of whatever ship it was originally, with many of its original quirks preserved (e.g. somewhere out there in Borg space may be Borgified Cardassian Galor-class cruisers, Klingon Birds-of-Prey, etc., assigned to less-important patrols and missions that do not require the full might of a Cube)?
 - Is it flown to the nearest Borg base and disassembled for parts or materials?

Is this ever explained at any level of canon, including novels?


  [1]: https://scifi.stackexchange.com/a/68985/70477