Select System Preferences from the Apple menu > Printers & Scanners (or Print & Scan, Print & Fax).
Click +, and then select your printer on the screen displayed.
Make the following settings.
Click Add.
If your printer is not listed, check that it is correctly connected to the computer and that the printer is on.
For a USB, IP, or Bonjour connection, set the optional paper cassette unit manually after adding the printer.