ASUS X55U Replacement Keyboard

I need to replace the keyboard on my ASUS X55U AB21. Seems there are two of them and from what I've read, they are not interchangeable. Can anyone tell me how to know which one to order?
THANKS in advance

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Asus parts must answer.

I've ordered keyboards for ours in the USA. Yes that was a year ago but they did answer the phone and got me the right part.

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Thanks, but...

....did you mean you ordered them from ASUS?

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Yes. Went to and then parts

And wasn't sure so found the phone number. It took about 10 days for the parts to arrive in winter.

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(NT) Thank you!!!

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