i cant see the serial number
my screen is black cant see the serial number
Mac mini, macOS 10.15
You can find the serial number on the bottom of the Mac.
It may be on the underside of the iMac pedestal.
With the serial number in hand you can type it in at this site to get specific info about the model, year and warranty status of your Mac. https://checkcoverage.apple.com
For safety and security purposes, please do not post your serial number in the support Communities.