EX400 EU vs US - anyway to tell?

in EX 400
Hello,
Is there a solid way to tell which region ECU my bike has? Photo of ECU model is attached, but no clear indication which region. Kawasaki Australia are no help, they say we get a mix of both regions.
Does it matter which region if I have the correct model?
Thanks,
Lee.
Comments
Same issue here mate, with same "no help" kawa Oz response. Is this still not resolved ?