Can the WatchMate be hooked up to a Laptop and a NMEA device, such as a chartplotter, at the same time? Follow Yes, that's how it's designed to be used. Related articles Can I connect AIS equipment to my computer? What apps can I use on iPad, iPhone and Android with the XB-8000 and WatchMate Vision? When selecting port output of NMEA+AIS does the WatchMate GPS data get output with AIS data? Configuring openCPN for XB-8000 or WatchMate Vision WatchMate XB-8000 Important Update Available