Konica Minolta bizhub C550 - Manual (Page 43)

Before use 1
C550 1-14
1.8 User authentication and account track
This machine can be set so that an account or user name and a password
must be entered in order to use the machine. Contact the administrator for
details on the account or user name for using the machine.
With user authentication (machine authentication)
Type in the user name and password, and then touch [Login] or press the
[Access] key.
With user authentication (external server authentication)
Specify the user name, password and authenticating server, and then touch
[Login] or press the [Access] key.