In order for an SD or Micro SD card to be used with your Humminbird, the card must meet the following:
Is Class10 (Card will have symbol depicted below)
No larger than 32GB
Formatted to FAT32
For Mac users, the format equivalent to FAT32 is: MS-DOS (FAT).
Instructions for both Windows and Mac below:
Windows
Insert the SD/Micro SD card in the card reader on your PC.
Open Windows File Explorer
Right click on the drive that corresponds with the card you just inserted.
This will normally be displayed as removable disc or SDHC
Left click on "Format..." from the list
Make sure the File System is set to: FAT32 (Default) and left click "Start"
A window will pop up and provide a warning that all content on the card will be erased if you continue, left click on "OK" to proceed and finish formatting.
Mac
Insert the SD/Micro SD card in the card reader on your Mac
Open the Disk Utility App
Select the card and click on "Erase"
Choose MS-DOS (FAT) for the Format
The Name can be changed to anything, but leave the scheme unchanged
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