GPSMAP 15x3 Connector View


Device connectors with callout

1

2 microSD® memory card slots, 32 GB max. card size, formatted to FAT32 or exFAT with speed class 10 or higher.

POWER

Power and NMEA® 0183 network

Ground screw (optional)

CVBS IN

Composite video in

SONAR

12-pin transducer

USB

Micro USB for compatible Garmin® card reader1

J1939

Engine or J1939 network

NMEA 2000

NMEA 2000® network

ETHERNET

Garmin Marine Network

1 Only compatible Garmin card readers recommended. Third-party card readers are not guaranteed to be fully compatible.
GUID-3E67C80C-0812-4EEC-BC60-699751B9CF6F v12
September 2025