We could make a very dumb biological calculator out of a few genetically-engineered neurons that would very obviously not be conscious.
It's still an open question if we can embed consciousness in our current microchips if we had enough of them together (which I think we currently don't), or if it requires some other physical process we don't fully understand, e.g. quantum. I strongly doubt it does require any quantum shenanigans, but even if it did, we can and will find all sorts of ways to make computers that can perform those shenanigans too. Eventually we're just going to stop being able to move the goalposts, unless you set those goalposts in magic-land.
And say what you want about meat but we don’t seem to find consciousness in rocks or plants or clouds or hairdryers. And the buddists report that some very strange things happen if you meditate for years on end but obviously they must be talking shit and making it up because it’s not testably scientific.