Open the printers folder.
Select the printer you want to update, and then do either of the following:
Navigate to the Configuration tab, and then select Update Now ‑ Ask Printer.
Apply the changes.
From System Preferences in the Apple menu, navigate to your printer, and then select Options & Supplies.
Navigate to the list of hardware options, and then add any installed options.
Are you experiencing limited printer functions? Check if the internal option is installed properly.
Know which precautions to take and how to position the printer when you are adding optional trays.