If the "Chart Selection" Menu under the Chart tab is set to "Auto" - the unit should automatically detect the map card ...

A few things to try ...

*Remove the micro card from the full size SD card adapter and reinsert it right back into the adapter for a possible bad connection issue in the SD card adapter ...

*Try the micro card in a different SD card adapter (any brand - doesn't matter if it's LakeMaster) ...

*Try the map card in a different unit ...

*Try the map card in the other slot ...

*Insert a blank SD card in the unit and try to capture a ScreenShot. (Press and hold the Mark button) ... Check the Snapshot and Recording view to see if the ScreenShot was successful ...

Rickie