Hi,
as an english speaker, this one intrigues me! I have to say I've never heard anyone say "computer mouses" OR "computer mice", and can't think of a time when I've heard anyone refer to them in the plural. If I went into a computer shop, I'd be inclined to say "I'm looking for a new mouse" rather than "do you have any computer mice (or mouses)?"
Instinctively, I'd say "mice" is more correct.
Mike