Where can I find my Serial number on my MacBookAir
Where can I find my Serial number on my MacBookAir
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Apple menu > About This Mac.
Also see the following from Identify your MacBook Air model - Apple Support
Find the serial number printed on the underside of your Mac, near the regulatory markings. It’s also on the original packaging, next to a barcode label. You can then enter that serial number on the Check Coverage page to find your model.