Format your Micro SD Card, and add different games to it. Use the USB adapter that came with it.
Then ignore that part. Format ur MicroSD and replace ROMs onto it.There was no usb adapter in the package. I use a SD Adapter that I have.
I'm using a Sony 64GB UHS-I BUT I've only tried running SMTIV from it so far and it hasn't frozen on me yet... admittedly I've only played about 0.5h (one try) as I also purchased a bunch of retail copies of games although TBH I'm hoping for gateway or a sw/hw sky3ds update again to something more generally useful. For the sky at least some sort of better backup management interface than the incredibly annoying button pushing, which I'm thinking that they SHOULD be able to do through sw, maybe not the happiest sw solution but a helluvalot better than button mashing cycling through every damned backup on a card as even with just 2(hell I can't even remember what the 2nd one I put on is/was) it's just damned well annoying and sssslllllloooooowwwwww....normally, we recommend Sandisk/Kingston card for customer,
you'd better change another memory card for a test,
then you will the problem
The one big problem is. After playing 15 minutes in every games on sky3ds. The game CRASH "FREEZE"
What is the problem?
I use a 64 GB Hight Speed Micro Sd XC lexar I bought at Walmart.
Whenever I have issues with an SD card I format it using Panasonic's SD Formatter (https://www.sdcard.org/downloads/formatter_4/) - in 99% of the cases the problem goes away after that
Make sure to do a "FULL (overwrite)" format, as "QUICK" probably just does the same as Windows' quick format.