Using xImage for Customized Waypoint IconsUse xImage to exchange images between your PC and yourGPSMAP 378/478. You can download and save screenshots of anyscreen shown on your unit. xImage also allows you to downloadcustomizable splash screens and waypoint symbols from compatibleGPS units, customize them (if you have an image editing programon your computer), and send them back to your GPS unit.You can download xImage from the Garmin Web site at http://www.garmin.com/ximage/. See the Help file for complete instructionsabout using xImage.Installing and Removing Data CardsThe GPSMAP 378/478 uses an optional Garmin data card to displaydigital charts and maps. Install the data card in the card slot locatedon the bottom of the unit. Install or remove the data card at any time,whether the unit is on or off.You can load a variety of information on your data card, such asMapSource detailed maps. You can also buy pre-programmed cardsto use with your GPSMAP 378/478.Data cards are not waterproof, should not be exposed to moisture orexcessive static charges, and should be stored in the case suppliedwith the card.To install a data card:1. Insert the card into the slot on the bottom of the unit. Be surethe label is facing the front of the unit.2. Firmly push the card into the unit. It is not necessary to forcethe card. The handle is still exposed when it is properlyinserted.3. If the unit is on, a confirmation tone sounds. The first timeyou insert a programmed data card, the unit takes a fewseconds to read the card. Once the data card has beenproperly installed and accepted, a summary screen notingthe card details appears. Press ENTER to acknowledge.If you insert a data card and get a card format not recognizedmessage, try removing the card and reinserting it. If the card is stillnot recognized, contact Garmin or your Garmin dealer.To remove a data card:1. Grasp the card handle. The handle expands for easyremoval.2. Pull the card out of the card slot on the bottom of the unit.3. If the unit is on, a confirmation tone sounds when the datacard has been removed.GPSMAP 378/478 Owner’s Manual 121APPENDIX > INSTALLATION INFORMATION