Enabling 4G support using a USB drive
You can enable 4G support on 8000 Series clocks by uploading the APN to the clock using a USB drive. Before completing these steps, you must obtain a SIM card and the APN information from your mobile service provider.
When the clock boots up, a message is displayed that the clock is
loading APN settings from the USB drive. 4G connectivity is enabled on the clock once it
finishes booting up. The clock will use 4G when a LAN or Wi-Fi connection is not
available.