Sorry - unfortunately when it comes to hardware, it can be really had to tell, even with stuff released here. I have things obviously tagged for Europe being sold here in the US, so YMMV on hardware.
Most companies don't bother changing the UPC with hardware, as they care about quantity sold, not where it's sold. Software is often attached with a different UPC for different SKUs so that they can break down where their title is popular and know whether or not to release similar software to that locale, as well as whether or not they should spend the time and money localizing.