Well-suited for SD devices where faster workflow and burst shooting is required, and capable for capturing Full HD, 4K and 8K video, and both raw and burst photography, the SanDisk Extreme PRO UHS-II SDXC Memory Card is compatible with the UHS-II bus. It features a video speed class rating of V90 that is characterised by minimum write speeds of 90 MB/s, as well as supports the U3 standard that features a 30 MB/s minimum write speed. Reading speeds are supported up to 300 MB/s while the write speeds are supported up to a maximum of 260 MB/s. This UHS-II/V90/U3 compatible card may be used in devices that do not UHS-II/V90. In those instances, the card will default to your devices lower speed class and bus rating. In addition, if your device does not support U3, this card is compatible with U1 and Class 10 standards that guarantees minimum write speeds of 10 MB/s. This SanDisk card, as with most SanDIsk media, is robustly built to be shockproof, X-ray proof, waterproof, and temperature-resillient. For safeguard against accidental data deletion, a write-protect swiitch is built-in in this Extreme PRO card. The option to download RecusPRO Deluxe software is available in the event that your data is compromised.