92 GPSMAP 2106/2110 Owner’s ManualAPPENDIX > OPTIONAL ACCESSORIESOptional AccessoriesThe following accessories are designed to enhance the operation of yourGPSMAP 2106/2110 chartplotter.To obtain replacement parts and optional accessories, contact your GarminDealer, Garmin Product Support in the U.S.A. at 800-800-1020, or GarminEurope at 44-0870-8501241.WARNING: Garmin accessories have been designed and specifically tested foruse with Garmin products. Accessories offered by other manufacturers have notbeen tested or approved for use with Garmin products. Use of such accessoriescould cause damage to the GPSMAP 2106/2110 and void the warranty.Bluechart g2 Preprogrammed Data Cards—enhance the basemap; featuringadditional data including highly detailed coastal roads and points of interest suchas restaurants, lodging, local attractions and more. Full-color aerial photos ofports, marinas, bridges, and navigational landmarks are also included on manydata cards.GSD 21 and GSD 22 Remote Sounder Module and Transducers—providessonar capabilities to the GPSMAP 2106/2110.MapSource Software CD-ROMs—enhances the basemap and creates waypointsand routes from your computer. MapSource offers several detailed mappingoptions that are compatible with the GPSMAP 2106/2110, including BlueChart.Programmable Data Cards—blank data cards are available in 16 MB, 32 MB,64 MB, and 128 MB sizes. Download street-level map detail, points of interest,business addresses and phone numbers, marine data, topographical information,and more from MapSource CD-ROMs to a data card, either directly throughyour GPSMAP 2106/2110 using the PC Interface Cable, or with the Data CardProgrammer.USB Data Card Programmer—programs blank data cards and downloads mapsto a data card at high speed using the USB port on your computer.Preprogrammed Data Cards—data cards that are preprogrammed with eitherGarmin BlueChart or Fishing Hot Spots map data.