I use the card in a Lowrance fishfinder/chartplotter. It basically has many of the lakes I fish on it and many more. It works like a GPS thus you know where you are at any given time on a body of water. At any rate, I have been told that if one try's to copy one of these cards that it can make the card totally useless. Something about when you put the card in the computer, the computer tries to make it ready to read and in doing so, destroys a necessary file or two making it impossible for the fishfinder/chartplotter to read it any longer. Hope that makes sense.
Think of it this way ...
There are of course many card adaptors in use that are the exact same size and connections as a normal SD card but they take a MICRO card. The connectors within the SD 'shell' have to be exactly as required for SD card use.. so there clearly cannot be any differences in the contacts of an SD card and a MicroSD card..
So that SD to Micro adapator that was shown in a link previously given above here.. has to be simply an alternative to the regular SD to Micro card which is all in one..the adaptor must be the same wiring but the SD card holder is seperate...then an inch or so of wiring (which must simply extend the full connections) to what is then a physically sized MICRO card that is merely an extension of the original SD card.
The only possible snag that I can see in this is that at least SOME MicroSD cards have to be pushed well into a receptor almost fully - only really leaving barely more than enough to get a finger-nail on the end so that it can be pushed-to-extract against a spring-loading. The important point here may be if that adaptor IS capable of being pushed home into whatever MicroSD slot you are going to use it in. Because of the nature of the design of the adaptor in that link (it does at least show a picture of it so you should very likely to be to tell if it would go into the MicroSD slot you are thinking of using) .. if it will do that..I see no way that whatever it goes into should do other than just read the card as though it was doing so from the original SD...
The only thing that is changing from ordinary original use is that the card contents are being read via what is an extended wiring from SD contacts to the equal of a MicroSD plugged into other equipment.
If there is any doubt whatsoever in your mind..why not ASK Navionics.. you are NOT in any way mis-using the card or attempting to copy it..just ask them if it IS OK for you to continue using the card in an adaptor for MicroSD use... as your original equipment using standard SD is not avaiable or in use... They can only say YES or NO.. but I just cannot see what they can object to... you are STILL using the card contents with all the restrictions that apply..it is merely being
connected differently.
--
eric
Staffordshire, UK