Turn off the printer.
Unplug the power cord from the electrical outlet, and then from the printer.
Using a flat‑head screwdriver, remove the fax cover.
Remove the hard disk cover.
Remove the controller board shield.
Unpack the fax card.
Attach the fax card to the hard disk cover.
Insert the fax connector cable to the controller board compartment.
Attach the hard disk cover.
Connect the fax connector cable to the controller board.
Attach the controller board shield.
Connect the power cord to the printer, and then to the electrical outlet.
CAUTION—POTENTIAL INJURY: To avoid the risk of fire or electrical shock, connect the power cord to an appropriately rated and properly grounded electrical outlet that is near the product and easily accessible.
Turn on the printer.