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Small rectangular microSDXC card with adapter, matte black finish, red label, 256GB capacity marking

SanDisk

SanDisk SDSQXCZ-256G-GN6MA DJT 256GB microSDXC memory card

SKU CH-7Z8A-DPQ7S

256 GB microSDXC card rated UHS-I U3, V30 and A2 with up to 170 MB/s read and 90 MB/s write

  • TypemicroSDXC
  • Card typeMicroSD
  • Capacity256GB
  • Speed Class RatingClass 10
  • 256 GB capacity stores large media libraries
  • 170 MB/s read speed transfers files quickly
  • 90 MB/s write speed captures high-bitrate footage
  • U3 and V30 ratings sustain 4K video recording
  • A2 rating accelerates app loading on mobile devices

Capacity and speed class

The SanDisk Extreme Pro microSDXC card provides 256GB of storage for cameras, drones and action cams that record full-HD or 4K video. Its UHS-I interface delivers read speeds up to 170MB/s and write speeds up to 90MB/s. The bundled adapter lets the card work in full-size SD slots.

Who this suits and who should look elsewhere

The V30, U3 and A2 ratings make the card suitable for continuous 4K capture and fast app loading on Android devices. Buyers who need sustained write speeds above 90MB/s for high-bitrate 8K workflows should consider faster media. Users with older hosts limited to UHS-I Class 10 speeds will not benefit from the higher ratings.

The specification that decides fit

The 90MB/s minimum sequential write speed guaranteed by the Video Class V30 rating is the single figure that determines whether the card can handle your recording bitrate without dropped frames.

Highlights

  • 256 GB capacity stores large media libraries
  • 170 MB/s read speed transfers files quickly
  • 90 MB/s write speed captures high-bitrate footage
  • U3 and V30 ratings sustain 4K video recording
  • A2 rating accelerates app loading on mobile devices

Specifications

BrandSanDisk
TypemicroSDXC
Card typeMicroSD
Capacity256GB
Speed Class RatingClass 10

Questions about this item

Will the 170 MB/s read speed work with my older camera that only supports UHS-I?

Yes, the card is UHS-I U3 rated so it will operate at the host device's maximum UHS-I speed.

How can I verify the card delivers the rated 90 MB/s write speed after formatting?

Run a sustained write test with a tool such as CrystalDiskMark or Blackmagic Disk Speed Test; the card should maintain at least 30 MB/s sequential write to meet its V30 and U3 ratings.

Does the package include the SD adapter or do I need to buy one separately?

The supplied adapter is included in the box so no separate purchase is required.

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