Lexmark X940E User Manual page 76

If your telecommunications equipment uses a US-style (RJ11) telephone line, follow these steps to connect the
equipment:
1
Remove the plug from the EXT port
Note: Once this plug is removed, any country- or region-specific equipment you connect to the printer by way
of the adapter, as shown, will not function properly.
2
Connect your telecommunications equipment directly to the EXT port
Warning: Do not touch cables or the printer in the area shown while actively sending or receiving a fax.
on the back of the printer.
76
on the back of the printer.