My keyboard affects my computer processor. My computer processor does not affect my keyboard. While there is a strong correlation, they are distinct.What is this 'you' thing you speak of, if not the brain/mind.
Unless you believe in some sort of supernatural soul, I'd say separating the two doesn't make much sense. Neuroscience, although it is in its infancy, shows quite a correlation between brain and mind.
The mind is what the brain does.
And the processor does not need to have a "supernatural" processor to acknowledge that keyboard and processor are different (there are no memory registers dedicated to - or output paths to - the keyboard, for example. It is an input-only device.)