CFexpress Type-B 64-256GB Memory Card CFE CFB Adapter Compatible with XS Camera 8K RAW PCIe Expansion. CFexpress type b card is shockproof, anti-magnetic, moisture proof, X-ray proof, cold and heat resistant, tough and durable, resistant to bending, and able to withstand extreme environments. Read write speeds of up to 200-800MB/s, offer low latency during high-speed recording and enhance workflow, Performance may be lower depending upon host device, usage conditions, and other factors. Build-in NVMe PCIe Gen3x2 SSD inside.Memory Size: See Tittle (Windows Output Binary will be smaller than this), Bus Interface: NVMe PCIe Gen3x2, Form Factor CFexpress Type B. Designed for next-gen video/photo cameras such as DSLR, cinema, and mirrorless cameras,Enables smooth, RAW 4K/8K video support. Captures flawless RAW videos and photos in breathtaking 8K Ultra HD resolution.