Designed, tested and approved for the Nintendo Switch game system. Read speeds up to 100MB/s and write speeds up to 90MB/s. Provides up to 512GB of additional memory. A single card to store multiple games, screenshots and videos.
MicroSDXC memory card.
 
512GB capacity.
Read speed 100MB per sec.
Write speed 90MB per sec.
Not backwardly compatible with SD only devices.