Devos II was the second planet in the Devos system. During the 2370s it was home to a Son'a outpost . During the Dominion War a ketracel-white storage facility was built there.

In 2375, the Federation learned of the existence of the storage facility. Due to this, Weyoun was forced to dispatch Dominion forces to defend the outpost rather then pursue the USS Defiant fleeing the area. (DS9: "Penumbra")