Sometimes the BU-353S4 arrives in "SiRF Binary" mode. To force NMEA for Windows apps:
Old drivers cause "Code 10" or "Code 43" errors. G Star Iv Gps Driver Download Bu-353s4 Windows 11
But when you open a terminal emulator like PuTTY, connect to COM3 at 4800 baud, and suddenly see lines of text scrolling by— $GPGGA,123519,4807.038... —you realize you haven't just installed a driver. Sometimes the BU-353S4 arrives in "SiRF Binary" mode