Lexmark MX421 User Manual page 15

Learning about the printer
CAUTION—POTENTIAL INJURY: To reduce the risk of fire, use only a 26 AWG or larger
telecommunications (RJ-11) cord when connecting this product to the public switched telephone
network. For users in Australia, the cord must be approved by the Australian Communications and Media
Authority.
Warning—Potential Damage: To avoid loss of data or printer malfunction, do not touch the USB cable, any
wireless network adapter, or the printer in the areas shown while actively printing.
Printer port
1 Power cord socket
2 Ethernet port
3 LINE port
Note: Available only in some
printer models.
4 EXT port
Note: Available only in some
printer models
5 USB port
Note: Available only in some
printer models.
6 USB printer port
Function
Connect the printer to an electrical outlet.
Connect the printer to an Ethernet network.
Connect the printer to an active telephone line through a standard wall
jack (RJ‑11), DSL filter, or VoIP adapter, or any other adapter that allows
you to access the telephone line to send and receive faxes.
Connect more devices (telephone or answering machine) to the printer
and the telephone line. Use this port if you do not have a dedicated fax
line for the printer and if this connection method is supported in your
country or region.
Attach a keyboard or any compatible option.
Connect the printer to a computer.
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