You might want the model name or serial number of your Mac when checking warranty coverage, searching for specifications, creating a home inventory, selling, giving away, or trading in your Mac, or learning whether it is compatible with the latest Mac operating system or other software or hardware.
Use About This Mac
How I change serial numbers on Apple boards! Your Mac serial number will show up in the dropdown. Another option for Apple serial number look up if you can’t access the Apple ID website for some reason is to check the original box your MacBook came in. Your MacBook Air serial number is going to be printed next to the barcode. Jul 27, 2009 Speciality level out of ten: 3. Jul 27, 2009 9:34 AM in response to iacdxb. In response to iacdxb. It's fine - they will have a record of your changed serial number. It's normal for a logic board replacement to change (or remove) the electronic record of the serial number (but it's also physically printed on/in the MBP). Can serial number change? Hi, the Serial number in my Macbook air, 1.6GHz, i5,8GB mem, 256 SSD when checked shows another system, MacBook Air 'Core i7' 2.2 13' (Early 2015) 2.2 GHz Core i7, is this normal?
From the Apple menu in the corner of your screen, choose About This Mac. You should see an overview of your Mac, including its model name and serial number.
If you see a window like this, double-click the version number beneath “OS X” to show the serial number:
Serial Number Checker
Use System Information
The System Information app also shows your Mac model and serial number. Open the app, then select Hardware on the left side of the System Information window. The model name and serial number appear on the right:
Other solutions
Imac Serial Number Lookup
Look on the outside of your Mac, or check the original packaging, receipt, or invoice as described on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.
Sign in to appleid.apple.com, then look for your Mac in the Devices section. If you see your Mac there, click its name to see the model name and serial number.
If you still need help, contact an Apple Store or Apple Authorized Service Provider.