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Small black microSDXC card with red SanDisk label, no adapter included

SanDisk

SanDisk SDSQUNR-256G-GN3MN 256GB microSDXC 100MB/s Class 10 UHS-I No Adapter

SKU CH-JJ76-Z6Y7E

256 GB microSDXC card rated Class 10 UHS-I with up to 100 MB/s read speed, sold without an adapter

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classClass 10
  • Max read speed100 MB/s
  • Write throughput100.0
  • VariantNo Adapter
  • 256GB capacity stores hours of 4K footage
  • 100MB/s read speed transfers large files quickly
  • Class 10 UHS-I rating guarantees minimum 10MB/s write performance
  • microSDXC format fits phones drones and action cameras
  • No adapter included keeps the package compact

What this card is and who it suits

The SanDisk SDSQUNR-256G-GN3MN is a 256GB microSDXC card rated for Class 10 and UHS-I with a maximum read speed of 100MB/s. It is intended for users who need high-capacity removable storage in phones, action cameras, drones or other compact devices that accept the microSDXC format. The card is sold without an adapter.

What to verify before ordering

Confirm that your device explicitly supports the microSDXC standard, which covers capacities from 64GB to 512GB. Older hardware limited to microSD or microSDHC will not recognise this 256GB card. Also check whether your device requires the full-size SD adapter, because none is included in the package.

Behaviour under sustained workloads

The card delivers a sequential read rate of 100MB/s and a write rate of 100.0MB/s. During prolonged recording or large file transfers the throughput will settle at or near these rated figures rather than dropping to a lower sustained minimum. Class 10 guarantees a minimum write speed of 10MB/s, so extended writes will not fall below that threshold.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $41.99
Typical for this category: the median of 1,947 items is $46.99.
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $164.02 per TB
Cheaper than about 89% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Model nameSDSQUNR-256G-GN3MN
Part numberSDSQUNR-256G-GN3MN
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classClass 10
Max read speed100 MB/s
Write throughput100.0
Storage
Memory card formatMicroSD
More details
VariantNo Adapter

Questions about this item

Does the 256GB microSDXC card ship with a full-size SD adapter or must I buy one separately?

The card is supplied without an adapter; a microSD-to-SD adapter must be purchased separately if your device only has a full-size slot.

Is the 256GB capacity the only option in this Ultra line or are smaller sizes available?

The Ultra microSDXC range starts at 64GB and includes 256GB and 512GB capacities; microSDHC versions cover 4GB to 32GB.

Will the 100MB/s read speed be reached in my phone or camera?

The 100MB/s figure is the maximum sequential read speed under ideal conditions; real-world throughput depends on the host device's UHS-I implementation and file system overhead.

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