Port 9100 is also known as AppSocket, RAW or Windows TCPmon.

Port 9100
This setting turns the protocol On or Off.

Host Access List
This field allows you to give printer access only to certain hosts. No entry indicates that all hosts have access to the printer. To give one or more hosts access to the printer, enter IP host names or IP addresses, up to a maximum of 255 characters. Separate multiple entries with space characters.

Page Description Language
Select the language you want the printer to receive on the Port 9100 port. If you select AutoSelect, the printer automatically senses the language of the print job and processes it accordingly.

Filtering
This field allows you to choose whether the printer removes control characters. In most cases, Filtering should be set to None.

Job Pipelining

• On: The printer can begin processing a new job on this port while it is still printing a previous job. 
• Off: The printer does not begin a new job on this port until the current job is completed.