Garmin Astro 220 Owner's Manual page 64

Transfer tracks as described on
Purchase microSD cards from an electronics supplier or
purchase pre-loaded MapSource detailed map data cards
from your Garmin dealer. Go to
www.garmin.com/cartography/
MapSource products.
To install or remove the microSD card:
1. Remove the battery compartment cover from the back
of the Astro 220.
2. Remove the AA batteries.
3. Slide the tray cover back to open it, then lift it to
remove or insert the microSD card.
4. Slide the cover forward to lock it in place.
Astro Dog Tracking System Owner's Manual
page 59.
for compatible
MicroSD card cover
MicroSD card tray
MicroSD card
Astro 220 with Batteries
To transfer Garmin MapSource map data to the
microSD card:
Follow the instructions provided with the MapSource
map data disk.
To use the USB Mass Storage Mode:
1. Connect the Astro 220 to a computer using the USB
cable provided.
2. Press MENU > MENU >
System > MENU > Mass Storage
Appendix
Removed
Advanced > Settings >
Mode.