Nov 05, · I think he means he has Navionics charts on an SD card, but needs microSD for a sounder. There is no way to copy the data from one card to another, or navionics would go broke. Sell your card, buy a new one the right size. _____. YOUR CARD IS NOW REGISTERED TO YOUR NAVIONICS ACCOUNT. If you would like to download to or update your card, please continue through the next steps. *** If you have a plotter card you were using to create SonarChart™ Live, you can move the files to your new card . Reading a Navionics card from the comfort of your personal computer enables you to check your Navionics maps from home. Accomplish this by using a USB-compatible Navionics map card reader that enables you to connect your Navionics map card to your computer's USB ports. The linking process typically takes less than.