This printer has an automatic interface selection feature that is turned on by default. This lets it automatically change the interface to IEEE 1284 parallel, USB, or Ethernet depending on which interface is connected and receiving data.

When you use the parallel interface, you can turn the high-speed and bi-directional parallel communications on or off by using Remote Printer Console. (See Remote Printer Console.)

If you typically use only one interface, we recommend that you choose that interface using Remote Printer Console. (See Remote Printer Console.) If only one interface is chosen, the printer will allocate the entire input buffer to that interface to speed up printing.