If you are setting up a Kyocera ECOSYS M3550idn for the first time or troubleshooting network access, you will likely need the administrator credentials. Kyocera security protocols have evolved over the years, so the default password depends on the specific firmware version installed on your machine.
Admin / Admin.How to Find the Default Password
Once you have regained access using the default password, you must secure the device immediately. Leaving the default Admin password on a network printer is a significant security risk. Malicious insiders or network worms could change your print settings, access stored scan data, or use the printer as a relay for email spam. kyocera m3550idn default password
Option B (Older Firmware):
as the password, which is the standard for newer Kyocera models. 3. Service/Maintenance Mode Kyocera ECOSYS M3550idn: Default Password & Login Guide