You can format an SD card using Windows, Mac, and Android devices, and likely your digital camera too.
The only type of SD card that works on a Nintendo Switch is a microSD card, which is smaller than a normal SD card.
Storage manufacturers love to tout their cards’ read and write speed, and will promote them using the highest possible numbers. For the PNY card on paper, that’s up to 890MB/s read and up to 750MB/s, ...