Free Express Shipping! Exascend 256GB Essential Pro CFexpress 4.0 Type B Memory Card 256GB Storage Capacity, PCIe 4.0 / NVMe 1.4 Interface, Max Read Speed: 3700 MB/s, Max Write Speed: 3150 MB/s, Min Write Speed: 400 MB/s (VPG-400), Dust, Weather, and...