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Tiny black microSD card with gold contacts and SanDisk label

Western Digital

Western Digital SanDisk Micro SD Express 256 GB 2 in 1 accessory

SKU CH-Z9ZD-QHZET

A 256 GB microSD Express card reaching 880 MB/s read and 480 MB/s write via NVMe for faster 4K capture and transfers

  • Ready for future devices with PCIe 3.1 NVMe and UHS-I dual interface
  • Up to 880 MB/s read speed for faster workflow
  • 4× faster reads than our fastest microSD UHS-I card
  • Saves up to 2.8 minutes per 60 minutes of 4K UHD video at 30 FPS
  • Transfers a 2-hour movie in under 3.5 seconds with compatible reader

Ready for future microSD Express devices

The Western Digital SanDisk Micro SD Express 256 GB 2 in 1 accessory is a new microSD card built for creators who need rapid data movement. It uses a PCIe 3.1 NVMe interface alongside a conventional microSD UHS-I interface for broad compatibility. Read speeds reach up to 880 MB/s and write speeds up to 480 MB/s, delivering performance comparable to a mobile SSD.

Creators needing fast 4K and RAW workflows

This card suits photographers and videographers capturing 5.3K video at 30 FPS or 10 megapixel RAW bursts who want to cut offload time. It is not for buyers who only shoot 1080p or JPEG and would see no practical benefit from the extra throughput. It is also not for users whose devices lack microSD Express support and cannot use the NVMe speed tier.

Verify host device and reader support

Before ordering, confirm your camera, drone, laptop or handheld explicitly supports microSD Express cards to unlock the NVMe performance tier. Check whether you own or plan to buy a compatible reader such as the SanDisk PRO-READER SD Express Dual Card to achieve the quoted transfer rates. Ensure your editing workstation can ingest the resulting files at matching speed.

Highlights

  • Ready for future devices with PCIe 3.1 NVMe and UHS-I dual interface
  • Up to 880 MB/s read speed for faster workflow
  • 4× faster reads than our fastest microSD UHS-I card
  • Saves up to 2.8 minutes per 60 minutes of 4K UHD video at 30 FPS
  • Transfers a 2-hour movie in under 3.5 seconds with compatible reader

Specifications

No published specifications for this item yet.

Questions about this item

What device interface is needed to use the PCIe 3.1 NVMe interface on this 256 GB card?

A device with an SD Express slot is required to access the NVMe speeds; in a standard microSD UHS-I slot the card falls back to UHS-I performance.

Will this card work in my older camera that only supports UHS-I microSD cards?

Yes, the card is backward compatible with current microSD UHS-I and UHS-II devices, though speeds will be limited to the host's UHS-I or UHS-II capability.

How can I verify the card is delivering the advertised 880 MB/s read speed after setup?

Use a benchmark tool such as CrystalDiskMark on a system with an SD Express reader; sustained sequential reads should approach 880 MB/s.

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