Promaster 512GB Advanced CFexpress 4.0 Type B

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
Limited lifetime warranty