- 21 -2. Setting UpInstalling the Optional Equipment• Installing the Wireless LAN module• Installing the Additional Tray Unit• Setting the Printer DriverInstall the wireless LAN module when you want to use a wireless connection.1 Check that the machine is turned off and power cord and all the cables areunplugged.Installing the wireless LAN module with the machine turned on may cause the machine and wireless LAN moduleto malfunction.2 Open the wireless LAN module cover.Installing the Wireless LAN module