[Auto]*, [PS], [PCL], [Imaging], [PDF]

This setting enables the machine to process data received from the host computer in the specified data format. Setting the Personality mode to [Auto] makes the machine determine the type of data received from the host on a job-by-job basis. If you are printing from applications on a computer, we recommend that you use [Auto].

If you find that the machine does not correctly switch to the appropriate personality when you [Personality] to [Auto], change the setting manually to match the data you are sending from the host computer. 
This mode is not available when printing in the UFR II mode.