GPSMAP ® 12x3 and GPSMAP 16x3 Connector View 1 As of software version 34.00, you can connect an external USB card reader to a GPSMAP 7x3, 9x3, and 12x3 series chartplotter and use a memory card up to a 1 TB, formatted to exFAT with speed class 10 or higher. 2 Only compatible Garmin card readers recommended. Third-party card readers are not guaranteed to be fully compatible. 3 As of software version 34.00, GPSMAP 16x3 series devices are compatible with up to 1 TB memory cards formatted to exFAT. 14 GPSMAP® Owner's Manual Owner's Manual Introduction 1 2 microSD® memory card slots, 32 GB max card size1.
POWER Power and NMEA® 0183 network ETHERNET Garmin® Marine Network J1939 J1939 engine network Ground screw CVBS IN Composite video in SONAR 12-pin transducer (Not available on all models) USB Micro-USB for compatible Garmin card reader2 NMEA 2000 NMEA 2000® network 1 GPSMAP 12x3: 2 microSD® memory card slots, 32 GB max card size1. GPSMAP 16x3: 2 microSD memory card slots, 1 TB max. card size3 POWER Power and NMEA® 0183 network SONAR 12-pin transducer (Not available on all models) HDMI OUT HDMI® video out CVBS IN Composite video in USB Micro-USB for compatible Garmin® card reader2 Ground screw ETHERNET Garmin Marine Network NMEA 2000 NMEA 2000® network J1939 Engine or J1939 network