SD card insert for the Nintendo Switch console.
You can insert a memory card into this card from the side, then place the whole thing in the console in the game card slot.
This is a great and useful gadget. Thanks to it, you can take an additional memory card with you when traveling and you don't have to look for it in your bag/case/pocket! Thanks to many attempts, I managed to adjust all dimensions to the console in such a way that the card fits easily and at the same time stays in place.
Of course console will not read this SD card, and will not see additional space from it. Some people thought it will…