The 256GB CFexpress 2.0 Type B Gold Memory Card (2-Pack) from ProGrade Digital provides read speeds of up to 1700 MB/s, which helps to quickly offload content to your computer, and write speeds of up to 1400 MB/s. Additionally, the Gold's minimum write speed is guaranteed not to drop below 300 MB/s, which allows for the uninterrupted recording of a wide variety of codecs, including raw 4K video, 4K and 6K ProRes 4444, 4K, 6K, and 8K ProRes 422 HQ, and more. This card is resistant to temperature extremes, shock, vibration, and X-rays, and is also backward compatible with select XQD cameras that adopt firmware to enable CFexpress. These cards take advantage of an NVMe host controller interface and backward compatibility with CFexpress 1.0.

General Features:

Fully compliant with CompactFlash Association CFexpress Type B 1.0 and 2.0 specifications
XQD host interoperable with firmware support from device manufacturer
Metal enclosure/encasement to endure high temperatures while providing better thermal conductivity
Built-in thermal throttling to protect your card and its content in the event of overheating
Designed to provide improved performance for flagship cinema, video, and photography cameras
Optimized controllers specifically designed for use in professional-grade cameras
Rigorous full card testing with serialized tracking of key components and manufacturing data for high quality control
Component-level testing down to individual memory chips for greater reliability
Refresh Pro enabled to quickly refresh card performance and monitor card health

manufacturer	‎ProGrade Digital
Country of origin	Taiwan

ProGrade Digital 256GB CFexpress 2.0 Type B Gold Memory Card 2-Pack