Thank you for viewing. This is a Nextorage CFexpress Type B 330GB card. It's a B1 Pro model memory card boasting high reliability, low heat generation, and a maximum transfer speed of 1950MB/s, equipped with pSLC memory. I used it for about a year with a Nikon Zf. I used it about once a month as an accessory for a sub-camera. The included accessories are the plastic case. Please check the images as this is a used item. - Storage Capacity: 330GB - Model Name: B1 Pro - Maximum Transfer Speed: 1950MB/s (Read), 1900MB/s (Write) - Manufacturer: Nextorage