Delkin Devices 128GB POWER CFexpress Type B Memory CardPCIe 3. 0 Interface Records 8K, 6K & 4K Video at High Frame Rates & Bitrates Max Transfer Speed: Up to 1780 MB s Max Write Speed: Up to 1700 MB s Sustained Write Speeds 128GB 512GB: 805 MB s 650GB 2TB: 1490 MB s Fully Compatible in All Modes of All Current CFexpress Type B Hosts TECHNOLOGICALLY ADVANCED SPEEDS Utilizing Delkins 4th generation solution (G4) and offering sustained sequential write speeds of at least 1490 MB s , capture flawless cinema