Automatic interface selection (HL-2150N / HL-2170W only)

This printer has an automatic interface selection feature that is turned on by default. This lets it automatically change the interface to USB or Ethernet depending on which interface is receiving data.
Since the default setting is on for the automatic interface selection mode, simply connect the interface cable to the printer. Always turn off both your computer and printer when connecting or disconnecting the cable.
Note Note
 
This function takes a few seconds to work. If you want to speed up printing, choose the required interface manually 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.