The DW5821e Snapdragon X20 LTE is a cellular modem module, manufactured by Qualcomm, designed to provide high-speed LTE connectivity for laptops, tablets, and other devices. The module supports 4G LTE, and its features are based on the Snapdragon X20 LTE modem, which is capable of carrier aggregation and supports speeds up to 1 Gbps on download and 150 Mbps on upload (depending on network conditions).

The NMEA part refers to the National Marine Electronics Association (NMEA) standard, which is used for GPS data formats. In this context, it means the module can provide GPS functionality, with NMEA messages sent to applications that need geolocation data.