I explained the experiments that you would do to figure that out: you modify parts of the system, and check if and how much that affects the consciousness. Paint the interconnects a different color: probably won't affect it. Replace the interconnect protocol with a different one: probably will have some effect. So, the paint on the interconnect: not a part of the consciousness. The interconnect protocol: part of the consciousness. If we are convinced that this is a real consciousness and thus these experiments are immoral, we simply wait until accidents naturally occur and draw conclusions from that, just like we do with human consciousness.

Of course, "the consciousness" is a nebulous concept. It would be like asking "which part of my processor is Windows" to some extent. But it's still fair to say that Windows is contained within my computer, and that the metal framing of the computer is not part of Windows.