The Ubiquiti UniFi U-LTE-US LTE Backup Internet Device is a white unit with Ethernet (RJ-45) ports, designed for AT&T's cellular network technology. It offers 4G and 802.3at connectivity with a maximum wireless data rate of 150 Mbps. This unit, manufactured by Ubiquiti Networks, is a single device with two LAN ports and is suitable for home networking and connectivity needs. Its compact design and reliable performance make it a versatile option for ensuring internet connectivity in case of a backup requirement.