The SanDisk 256GB Extreme PRO 200MB/s UHS-I SDXC Memory Card is designed for devices capable of recording Full HD, 3D, and 4K video and burst and raw. With a speed class rating of V30 and compatible with the UHS-I bus. The speed class rating of V30 ensures minimum write speeds of 30 MB/s. This SD card supports read speeds of up to 200MB/s and a maximum write speed of 140MB/s.
The SanDisk 256GB Extreme PRO 200MB/s UHS-I SDXC Memory Card may be used with devices not supporting UHS-I / V30 / U3. The card will then default the device’s speed class and bus rating.