Silicon Power microSDXC Express Card 512GB Read up to 880MB/s Up to 700MB/s Write Compatible w/Switch 2 (Adapter NOT Included) Model SP512GBSTEI31V10

Color microSDXC Express 512GB Special Feature Dust Proof Read Speed 880 Megabytes Per Second Item Weight 0.3 Grams Warranty Type Limited Write Speed 700 megabytes_per_second Hardware Interface microSDXC Secure Digital Association Speed Class Class 10 Manufacturer SP Silicon Power