Designed to deliver speeds necessary for working with smooth, raw 4K video captures at resolutions up to 4096 x 2160, the 64GB Extreme PRO CFexpress Type B Memory Card from SanDisk provides read speeds of up to 1500 MB/s and write speeds of up to 800 MB/s, which enables low latency during high-speed recording and an enhanced workflow efficiency. This card is also backward compatible with select XQD cameras that adopt firmware to enable CFexpress. In the event of accidental file deletion, SanDisk's RescuePRO Deluxe data recovery software is available as a free download.