Sinamics dragonnn To set the APN (Access Point Name) in an E3372H modem, you will need to follow these steps: Connect the modem to your computer using the USB cable. Open the modem's web interface by entering its IP address in a web browser. The default IP address is usually 192.168.8.1, but it may be different depending on your configuration. Enter the login credentials for the modem. The default username is usually "admin" and the default password is usually "admin" or "password". Navigate to the "Network Settings" or "Mobile Network" menu in the modem's web interface. In the APN field, enter the APN provided by your mobile network operator. This information can usually be found in your mobile contract or by contacting your mobile network operator's customer support. Save the changes and exit the modem's web interface.