User's Guide Printer Basics Control Panel Buttons and Lights 14 B Ink cartridge holder Install the ink cartridges. Ink is ejected from the print head nozzles underneath. A Rear cover Remove when removing jammed paper. B LAN port Connects a LAN cable. C USB port Connects a USB cable. D AC inlet Connects the power cord. E LINE port Connects a phone line. F EXT. port Connects external phone devices. A Turns the printer on or off. Unplug the power cord when the power light is off. B Displays the home screen.