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MSD Format Does Not Fit Plotter Card Slot

Navionics® has programmed charting onto the MicroSD™ (MSD™) format since 2010. The actual chart data is stored on the MSD card, and the MSD cards are shipped within a larger SD adapter. It is important to remember that the SD adapter does not have any data on it, and is used only as a means to connect your microSD card to your PC or your unit if your unit takes the larger SD format. Chartplotters that require physically smaller-sized chips will require the removal of the MSD card from the SD adapter.

To remove the MSD card from the adapter:

  1. Hold the chip so you can read the label.
  2. Find the small groove at the bottom of the chip.
  3. Gently use your thumbnail to slide the smaller microSD card out of the SD adapter.

SD adapter and MSD card with arrow pointing from MSD to SD adapter slot

IMPORTANT! Do not use pliers or tools to remove the MSD card from your chartplotter, as this can damage the card permanently.

Even if your unit has a microSD slot, you should still keep your SD adapter for the following reasons:

  • To perform updates to the Navionics card from your computer.
    Reinsert the MSD card into the SD adapter and plug it into your computer's card slot or USB card reader. 
  • The information printed on the label of the adapter is needed should you require support with your card.
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