Owner's Manual
Page 31
... the c320 software, or loading additional maps. Follow the instructions that came with the new map data to properly install the maps to your unit ID (see page 18) and serial number (see page i). These drivers must connect the USB cable to your computer. Before you can purchase additional MapSource map data from Garmin and download the maps...
... the c320 software, or loading additional maps. Follow the instructions that came with the new map data to properly install the maps to your unit ID (see page 18) and serial number (see page i). These drivers must connect the USB cable to your computer. Before you can purchase additional MapSource map data from Garmin and download the maps...