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I am trying to find a replacement part for my macbook air 2016 (model-A1466) I/O board and flex cable. The cable has a part number printed on it:
821-1722-A
C-{4 digits which I can't remember}

I found a replacement part with the same product number, but the 4 digits on the second line are different.

Does that matter or do I need an EXACT match?

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According to this iFixit product page the part number for this part doesn't seem to include the C-XXXX portion as they only have 821-1722-A listed in the part number. I also find it useful to use their Identify your Mac feature when I'm looking for parts. Good luck!

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