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Two green CFexpress Type-B cards and matching dual-slot reader

SanDisk

SanDisk Extreme PRO 512GB CFexpress Type-B 2-Pack with Green Dual-Slot Reader

SKU CH-1BTK-EXQJR

Two 512 GB CFexpress Type-B cards with a dual-slot USB-C 3.2 Gen 2 reader deliver up to 1700 MB/s read and 1400 MB/s write for raw 4K video

  • Read speeds up to 1700MB/s for rapid file transfer
  • Write speeds up to 1400MB/s sustain RAW 4K video capture
  • Backwards compatible with select XQD cameras for versatile use
  • Two 512GB CFexpress Type-B cards included for extended capacity
  • USB-C 3.2 Gen 2 dual-slot reader included for CFexpress and SD UHS-II cards

Ready-to-shoot kit for high-resolution capture

This bundle pairs two 512GB CFexpress Type-B cards with a green dual-slot USB-C 3.2 Gen 2 reader. The cards reach 1700MB/s read and 1400MB/s write for raw 4K video. The reader handles CFexpress and SD UHS-II media in a single device. Professionals gain a complete ingest solution in one purchase.

Built for continuous RAW 4K workflows

Videographers recording long takes at high bitrates benefit from sustained write speed and low latency. Photographers shooting extended bursts avoid buffer waits. Users whose cameras only accept SD media cannot use the CFexpress cards. Buyers needing more total capacity than 1TB should look at larger single cards or additional packs.

1700MB/s read speed offloads footage fast

The headline read figure determines how quickly raw 4K files move from card to workstation through the USB-C 3.2 Gen 2 interface. Write speed of 1400MB/s governs whether the camera can sustain its highest-quality codec without dropping frames. Both numbers come from the same card specification.

Highlights

  • Read speeds up to 1700MB/s for rapid file transfer
  • Write speeds up to 1400MB/s sustain RAW 4K video capture
  • Backwards compatible with select XQD cameras for versatile use
  • Two 512GB CFexpress Type-B cards included for extended capacity
  • USB-C 3.2 Gen 2 dual-slot reader included for CFexpress and SD UHS-II cards

Specifications

No published specifications for this item yet.

Questions about this item

What camera slot or adapter do I need to use the CFexpress Type-B cards?

The cards fit CFexpress Type-B slots; they also work in select XQD cameras that have received firmware enabling CFexpress support.

Will the included reader transfer data from my older UHS-II SD cards at full speed?

Yes, the green dual-slot reader supports SD UHS-II on one slot and CFexpress Type-B on the other, both over USB 3.2 Gen 2.

How can I verify the cards are delivering the advertised 1700 MB/s read and 1400 MB/s write after setup?

Run a disk benchmark tool such as CrystalDiskMark or Blackmagic Disk Speed Test with the reader connected via USB 3.2 Gen 2 and compare the sequential results to the rated speeds.

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