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Appendix
Garmin Data Cards
Installing and Removing Data Cards
The MX20 uses an optional Garmin data card to display digital charts and maps on-screen or save user data.
Install the data card in the card slots located on the left side of the unit. Install or remove the data card only
when the unit is off.
To install a data card:
1. Insert the card with the label facing to the left of the unit into the slot.
2. Firmly push the card into the unit. It is not necessary to force the card. The handle is still exposed when
it is properly inserted. DO NOT insert or remove the data card while the unit is powered on.
If you insert a data card and get a “card format not recognized” message, try removing the card and reinserting
it. If the card is still not recognized, contact Garmin Customer Service or your Garmin dealer for assistance.
Data cards are not waterproof, should not be exposed to moisture or excessive static charges, and should be
stored in the case supplied with the card.
To remove a data card:
1. Press in on the data card ejector for easy removal.
2. Pull the card out of the card slot on the bottom of the unit.
Front View of Data Card Slot
Data Cards