The Berellians are a species from the Alpha or Beta Quadrant.
The Berellians apparently are very inept in dealing with machinery, as Christopher Hobson claimed that no one would think of making a Berellian an engineer as no one would think of making a Klingon a counselor. With these examples he wanted to prove his point, that an Android like Data could not be a good captain, when Data was designated to take command of the USS Sutherland. (TNG: "Redemption, Part II")