SanDisk Extreme PRO CFexpress Card Type B. When you’re shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s,** you’ll get low latency during high-speed recording and an enhanced workflow efficiency that’s far beyond anything existing SanDisk cards deliver. Compara precios desde: Sandisk in Cámaras digitales