The Netgear Unite Express Explorer 2 AirCard 797S 4G LTE Hotspot is a portable Wi-Fi hotspot modem designed by NETGEAR specifically for AT&T's cellular network. This device provides fast 4G LTE connectivity for a wide range of devices, making it ideal for on-the-go internet access. With its compact unit type, this hotspot modem allows users to quickly and easily create a secure and reliable Wi-Fi connection wherever they are, ensuring seamless connectivity for work or leisure.