CUPS (formerly known as Common UNIX Printing System), is a network
printing system that allows Mac OS devices to connect to various
printers on a network.
As the CUPS Web
Interface may be disabled by default on your Mac, you will need to
enable it.
To do this, you will first need to visit:
http://localhost:631/printers/
If you get a message stating that the interface is disabled, you will need to open the Terminal and run this command
cupsctl WebInterface=yes
Hit Enter
Now you can try going to the CUPS menu (above) again.
