How to find the serial number of Mac mini
Take a look at the below and learn where you can find your serial number. Actually, it can be found in several places, such as Mac OS X, the surface of the computer, receipt or invoice and the product packaging.
Simply open About This Mac window, where all details regarding your computer are posted.
If you haven’t thrown away the original box for Mac mini, there is a possibility to find the serial number on the barcode label.
There is a high possibility that if you still have the original invoice or receipt, the serial number is noted there. However, some retailers are not including it.