If you search for "Canon L11121E driver", many Vietnamese driver sites will redirect you to Canon LBP1120 or Canon LBP1210 drivers — and they often work because Canon used the same CAPT (Canon Advanced Printing Technology) driver internally for multiple old laser printers.
However, there's an about this specific model number: cài driver máy in canon l11121e
This appears to be a Vietnamese phrase: – meaning "install driver for Canon L11121E printer" . If you search for "Canon L11121E driver", many