When you look at the serial number of a MacBook, the first three symbols usually indicate the country in which the product was created. Most of the MacBooks we see today start with C02, because they are mainly produced in China. To find the serial number, open the Apple menu in the corner of the screen and select About this Mac. The serial number will be listed in the information that appears.
The fourth and fifth digits of the serial number are the production date. The fourth character represents the year and the fifth represents the week. It is possible to decode this information by memorizing the meaning of each character and doing a bit of math, but it is much easier to reference a date code table. If your computer is turned off or won't turn on, you can turn your Mac over and look for the serial number physically printed on the hardware.
Look for text that begins with Designed by Apple in California, and then look at the lowest line of writing, where you'll find the serial number. The serial number of a MacBook can tell us a lot about where it was made and when it was produced. Knowing this information can be useful for troubleshooting, repairs, and even resale value. By understanding how to locate and interpret a MacBook's serial number, you can gain valuable insight into your device.