Canon MB2100 SERIES Online Manual page 272

Press the left Function button (E) to display the Change LAN screen. From there, you can adjust
wireless LAN settings.
Press the center Function button (F) to display the Current estimated ink levels screen. From there,
you can check current ink levels.
Press the right Function button (G) to display the Register cassette paper info screen. From there, you
can check the cassette's page size and media type settings.
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