The Cricket NMEA Port Windows Driver is a software driver that allows your Windows operating system to communicate with a Cricket GPS receiver via a serial or USB port. "NMEA" refers to the National Marine Electronics Association standard, which is widely used for transmitting GPS data, including latitude, longitude, speed, and time information, from GPS receivers to other devices or software.

The Cricket GPS receiver might use a serial or USB connection, and the driver is essential for the Windows operating system to correctly interpret the data coming from the GPS receiver. The NMEA protocol is often used in applications such as GPS mapping, navigation, and geospatial analysis.