Press MENU twice to open the main menu. Select Setup > System > Interface.

Garmin Spanner

Allows you to use the device USB port with most NMEA 0183-compliant mapping programs by creating a virtual serial port.

Garmin Serial

Sets the device to use a Garmin^® proprietary format to exchange waypoint, route, and track data with a computer.

NMEA In/Out

Sets the device to use standard NMEA 0183 output and input.

Text Out

Provides simple ASCII text output of location and velocity information.