Connecting Your GPSMAP 278 to a Computer
You can connect your GPSMAP 278 to your computer using
the supplied USB cable to connect to a USB data port or the
PC Interface cable to connect to a DB-9 serial communications port.
NOTE: Fully install the supplied MapSource program, Trip &
Waypoint Manager, on your computer before connecting the
USB cable to the computer.
USB Data Port on Your PC
Serial Communications Port
USB connector
under weather
cap
To connect your GPS to your computer:
1. Connect the small end of your cable to the lower connector
on the back of the GPSMAP 278, shown in the illustration to
the left.
2. When using the supplied USB Data Cable, connect the larger
end of the cable to an available USB data port (see the
illustration on the left).
When using a PC Interface Cable, connect the larger end of
the cable to a serial communications port on your computer
(see illustration on the bottom left).
Information About USB Drivers
The USB drivers should have been automatically installed when
you installed the MapSource program that came with your
GPSMAP 278. The first time you connect the GPSMAP 278 to a
USB port, your computer might prompt you to locate the destination
of the drivers for the device. You only need to install the drivers
once. After the drivers are installed, your computer will always
detect your GPSMAP 278 when it is connected. USB drivers
might be updated periodically. You can find these updates at
www.garmin.com.
GPSMAP 278 Owner’s Manual 105
APPENDIX > INSTALLATION INFORMATION
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