microSD Card Requirements for the Garmin fleet 770, Garmin fleet 780, and Garmin fleet 790

A Garmin fleet device can use the minimum/maximum (max) card size as listed below.

Important information:

• When using a card with a larger capacity, if there are too many files and/or large files on the card, the device may draw maps more slowly.

• When updating the maps on a device, an SD card with at least 4 GB of space must be used.

• See Using a 64 GB microSD/SD Memory Card or Larger for devices below compatible with 64 GB microSD/SD Memory Cards or larger.

• Garmin Express will only install a map update to a memory card if there is not enough space on the internal storage of the device.
  • Maps cannot be moved from the device to a memory card manually.
• Instructions on where to insert your device's SD card/microSD card can be viewed  in your device's Owner's Manual.

• SD/microSD cards can be purchased from Garmin or other retailers.  Garmin offers the following SD/microSD cards for purchase.

4 GB microSD Class 4 Card with SD Adapter

8 GB microSD Class 4 Card with SD Adapter

16 GB microSD Class 10 Card with SD Adapter