Nextorage A2 SE 256GB Achieves a maximum read speed of 1900MB/s. - Brand: Nextorage - Model: A2 SE - CFexpress 4.0 - Capacity: 256GB - Max Read Speed: 1900MB/s - Max Write Speed: 1700MB/s - Sustained Write Speed: 400MB/s Thank you for viewing. This is a CFexpress type A card made by Nextorage. Purchased on Amazon in December 2024. Used with α1II. I am selling it because I no longer need it due to a change in mount. It comes as a set with a card reader. Please purchase if you understand that this is a used item. If you have any questions or concerns, please contact me in the comments.