Its just a BBB, which is used across all latest Antminers, but the thing is, the unique thing you need to turn the BBB into a controller is the daughter board, the unique thing to each miner.

Its also hard to tell which portion of the controller died. I guess having a spare would not hurt, but by itself, will not run any miners.

On the page itself it says that it is not included (The unique portion of each miner controller); "IO board doesn't included." Quoted exactly as Bitmain wrote it in their disclaimer.