SanDisk 512GB Extreme Pro CFexpress Memory Card Type B Up to 1700Mbs Read Speed Up to 1400Mbs Write Speed When youre shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s, youll get low latency during high-speed recording and an enhanced workflow efficiency thats far beyond anything existing SanDisk cards deliver. This card enables smooth, RAW 4K video capture with sustainable performance. Backwards-compatible with select XQD cameras that adopt firmware enabling CFexpress, the card includes both RescuePRO Deluxe Recovery Software and a limited lifetime warranty for added peace of mind.