The Sierra Wireless NMEA Port driver is typically associated with Sierra Wireless devices that include a GPS module, which communicates using the NMEA (National Marine Electronics Association) protocol. This protocol is a standard used for transmitting GPS data between devices like GPS receivers and computers. In the case of Sierra Wireless, this would most often be found in products like Sierra Wireless AirCard modems, AirLink routers, or Sierra Wireless GPS modules that utilize the NMEA protocol for GPS data.

The NMEA Port allows your Windows computer to receive GPS data (such as location, speed, time, etc.) through a virtual serial port created by the Sierra Wireless device. These drivers are necessary for the proper communication between your Sierra Wireless GPS device and any software that uses this data (such as mapping software, tracking applications, or navigation systems).