Third-Party SIM Card Support Avoid internet downtime and lost productivity by adding a UniFi LTE Pro to your existing UniFi network. UniFi LTE Pro provides backup cellular internet connectivity to ensure your UniFi WAN network is always running. This model works in the EU region and supports European LTE and WCDMA bands. It has a Nano SIM card slot for your own card. Insert the Nano SIM, connect to any switch port in your corporate network, and activate the device.