Apple LaserWriter 12/640 PS - Manual (Page 249)

Though the printer itself has no control panel, you can configure it by using
programs on computers connected to the printer:
m On Mac OS–based computers, use the Apple Printer Utility and the
desktop printer’s setup function.
m On Windows-based computers, use the Apple LaserWriter Utility for
Windows.
m On UNIX-based workstations, log in to the TCP/IP Printer Configuration
Utility using the UNIX telnet program.
249
Appendix A
Setting the Printer Default Settings