SanDisk Extreme PRO 128GB CF Express Card Type B, up to 1700MB/s Key Features: - 128GB Storage Capacity - Max Read Speed: 1700 MB/s - Max Write Speed: 1200 MB/s - Records Raw 4K Video - Compatible with Select XQD Devices Designed to deliver speeds necessary for working with smooth, raw 4K video captures at resolutions up to 4096 x 2160, the 128GB Extreme PRO CFexpress Card Type B from SanDisk provides read speeds of up to 1700 MB/s and write speeds of up to 1200 MB/s, which enables low latency during high-speed recording and an enhanced workflow