This dual SD adapter lets you use two SD cards in the Raspberry Pi, so you can switch between 2 different operating systems without having to change the SD card. The extended SD contact also allows the adapter to be used in conjunction with many housings in which the SD slot is accessible from the outside. https://elecena.pl/product/18402446/raspberry-pi-microsd-adapter-dual 2021-05-08 https://elecena.pl/product/18402446/raspberry-pi-microsd-adapter-dual 2023-08-25