Designed for emerging mainstream imaging applications, the 960GB CFexpress 4.0 Type A Iridium Memory Card (2-Pack) from ProGrade Digital provides read speeds of up to 1800 MB/s, which helps to quickly offload content to your computer, and write speeds of up to 1700 MB/s. Additionally, the Iridium's features sustained write speeds of 1450 MB/s and, thanks to its VPG-200 certification, minimum write speeds that are guaranteed not to drop below 200 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 harsh temperatures, shock, vibration, and X-rays and also takes advantage of an NVMe PCIe Gen4 x1 host controller interface. Also featured is Refresh Pro, allowing you to monitor your card's health, and sanitize your card to bring it back to factory fresh speeds. Refresh Pro software also enables a field firmware upgrade if needed to ensure optimum performance.