Shoot without limits With up to 512 GB[1] of capacity, the SanDisk Extreme PRO UHS-I card enables you to capture everything, wherever you are. Maximising Extreme speeds For maximum efficiency, take advantage of fast transfer speeds of up to 95 MB/s [2] for post-production workflow. Engineered for 4 K Ultra HD With UHS Video Speed Class 30 (V30) [4] and UHS Speed Class 3 (U3) ratings, the SanDisk Extreme PRO UHS-I cards let you capture uninterrupted 4K UHD and Full HD video [3]. Ideal for professionals recording extreme sports and other fast-action activities, you can rely on uncompromising performance without dropping frames. Keep up with the action With write speeds of up to 90 MB/s [2], easily handle sequential burst mode photography and the recording of extreme sports or fast-action activities without dropping frames.