the POWER CFexpress Type B Memory Card from Delkin Devices features a storage capacity of 256GB and is designed for professional photographers, videographers, and high-end cinematic hosts. It is well-suited for raw and continuous-burst photography, as well as 8K, 6K, and 4K video at high bit rates and frame rates. Thanks to a PCIe 3.0 interface, you can achieve maximum read speeds up to 1780 MB/s, maximum write speeds of 1700 MB/s, and sustained write speeds of 805 MB/s. To help facilitate card usage in almost any environment, as well as keeping your content safe, Delkin designed its POWER Series to be resistant to shock, magnets, X-rays, static, UV rays, and extreme temperatures. Please note that this card is not compatible with CFexpress Type A, CompactFlash, or CFast 2.0 hosts.