On newer firmware or certain regions, the default password is the Serial Number of the device (case-sensitive, all caps), while the username remains Admin .
Leaving your device with its default password is a significant security risk. Any user on your network could potentially access the printer's configuration, address book, and stored documents. Kyocera strongly advises changing default passwords during the installation phase to protect against unauthorized access and data breaches. kyocera m3550idn default password work
Are you locked out of the or the physical touch screen ? On newer firmware or certain regions, the default
Сервисные пароли Kyocera | БКС (Киосера) - БелКопирСнаб On newer firmware or certain regions
Go to > User Login/Job Accounting > Administrator .