Works With Chromebook The SanDisk Ultra microSD UHS-I card is tested and certified to work seamlessly with Chromebooks. So you can rest assured, it’s the right card. Up to 256GB of Storage Whether for school, work or play, easily add enough storage for your photos, videos and other files. Move content fast Blazing transfer speeds of up to 120MB/s let you move photos and files fast. Load Android apps faster Rated A1, the SanDisk Ultra microSD card is optimized for Android apps, delivering faster app launch and performance. Perfect for Full HD video With a Class 10 rating, the SanDisk Ultra microSD card is great for watching Full HD video – right from the card. Ready for what life dishes out Waterproof, temperature-proof, X-ray-proof, magnet-proof, and shock-proof to stand up to life’s mishaps.