Matter is held together by forces that also get distorted by the black hole. The cable would disintegrate, because the first atoms to reach the event horizon would become disconnected from each other, because even the forces that hold them to the ones above can't travel up to keep the structure together.

And really, even the quarks that make up atoms would get separated. It doesn't matter how robust something is, because it's not like the forces generated by the black hole "press" on the object, anything past the horizon loses all structure down to its quarks, all of it inside and out.