Garmin GPSMAP 76CSx Owner's Manual - Page 12

Getting Started Using the Databases Optional MapSource CD-ROMs enhance the versatility of your GPSMAP 76CSx. This data is loaded to the microSD Card already installed in the unit. With optional MapSource City Navigator data, you can view listings of nearby restaurants, lodging, shopping centers, attractions and entertainment, and even retrieve addresses and phone numbers for any listed location. The included USB Interface Cable or an optional PC interface cable (with a serial connector) can be used to transfer MapSource CD-ROM data to the microSD card. Higher capacity and pre-loaded microSD map data cards are also available. Map data transfer requires the USB Interface Cable provided with the unit to transfer MapSource data from a PC to the microSD card when installed in the GPSMAP 76CSx. Use the USB Mass Storage feature to transfer other files to the microSD as explained on page 51. See http://www.garmin.com/cartography/ for compatible MapSource products.  USB interface cable connection under opened battery cover MICRO SD CARD microSD card slot located in battery compartment GPSMAP 76CSx Owner's Manual