The ProMaster 512GB Advanced CFexpress 4.0 Type B memory card offers excellent performance at an affordable price.

With excellent minimum sustained sequentual write speeds, Advanced Memory Cards enable your camera to perform well in all modes including high-resolution video capture. ProMaster CFX-B cards use top quality flash memory and components for years of service and thousands of read/write cycles.

Key features: 

• 820 MB/s minimum sustained sequential write speed 
• 3500 MB/s read speed
• CFX-B 4.0
• PCI Express 4.0 Bus (also supports NVM Express)
• Heat & cold resistant