9.5 How do I configure NPCONFIG.PUB.SYS to recognize the correct port on a three port HP JetDirect EX box?
Use the tcp_port_number directive as follows:
Parallel 1: tcp_port_number=9100
Parallel 2: tcp_port_number=9101
Parallel 3: tcp_port_number=9102
A single port HP JetDirect box uses port 9100, but there is no need to specify it in NPCONFIG.