Lexmark 9300 Series - Manual (Page 20)

2 Connect the telephone line of your chosen telecommunications equipment to the left outlet of the adapter.
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 on the back of the printer.
Note: Once this plug is removed, any country- or region-specific equipment you connect to the printer by the
adapter, as shown, will not function properly.
2 Connect your telecommunications equipment directly to the EXT port on the back of the printer.
Warning: Do not touch cables or the printer in the area shown while actively sending or receiving a fax.
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