The document explains the fax function of the AR-M230/M270 Series multifunction printer and provides instructions for using the fax function. It also introduces the feature of storing fax destinations in the Web page when the printer expansion kit is installed. Additionally, it mentions important information for AR-M256/AR-M257/AR-M258/AR-M316/AR-M317/AR-M318/AR-5625/AR-5631/MX-M260/MX-M310 users.