D-Link 301P - DP Print Server Manual page 131

For set up Socket Printing:
1. Enter the IP address of the print server to which the printer is attached in
Address field. After that, type ": 9100" for port 1, ": 9101" for port 2 or ":
9102" for port 3.
2.
Keep the blank in queue field.
Click Add button after done the section of printer model in the Print Using
127