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Small red microSDXC card with SanDisk Ultra branding

SanDisk

SanDisk Ultra microSDXC 256GB A1 U1 Class 10 120MB/s memory card SDSQUA4-256G-GN6FA

SKU CH-EDXN-VKDHN MPN SDSQUA4-256G-GN6FA

A 256GB microSDXC card rated UHS-I U1 Class 10 A1 with up to 120MB/s read speed, certified for Chromebooks and built waterproof, temperature-proof, X-ray-proof, magnet-proof and shock-proof

  • Total capacity256 GB
  • Speed classUHS-I / U1 / Class 10 / A1
  • Max read speedUp to 120 MB/s
  • Product typeMicroSDXC
  • Key featuresWorks With Chromebook The SanDisk Ultra microSD UHS-I card i

Capacity 256GB

  • Chromebook-ready storage tested and certified for seamless compatibility
  • 256GB capacity stores photos, videos and files for school or work
  • Up to 120MB/s read speed moves large files quickly
  • A1 rating launches Android apps faster with smoother performance
  • Waterproof, temperature-proof, X-ray-proof, magnet-proof and shock-proof durability

Chromebook-ready microSDXC

The SanDisk Ultra microSDXC card provides 256GB of removable storage for Chromebook users. It carries UHS-I, U1, Class 10 and A1 ratings and is tested and certified for seamless compatibility with Chrome OS devices.

Suited for Chromebook expansion.

This card suits students, professionals and casual users who need extra space for apps, documents and media on a Chromebook. It is not designed for buyers who require sustained write speeds for 4K video recording or professional photography workflows.

256GB capacity with A1 app performance

The 256GB capacity holds large libraries of photos, Full HD videos and offline files while the A1 rating accelerates Android app loading. Sequential reads reach up to 120MB/s for quick transfers, though write-intensive tasks such as continuous burst shooting will hit the U1 minimum threshold.

How it compares

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

Price $35.99
Cheaper than about 58% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $140.59 per TB
Cheaper than about 92% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineUltra
Model nameSDSQUA4-256G-GN6FA
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I / U1 / Class 10 / A1
Max read speedUp to 120 MB/s
Size & build
Shipping weight0.01 kg
Package size152 × 102 × 5 mm

Other versions of this model

2 more in the same range

Questions about this item

My laptop only has a full-size SD slot — what adapter do I need for this microSDXC card?

You need a microSD-to-SD adapter; the card itself is microSDXC format and fits the adapter, which then goes into the full-size slot.

Will the UHS-I interface on this card work in my older camera that only supports Class 10?

Yes — the card carries a Class 10 rating, so it will operate at Class 10 speeds in devices that do not support UHS-I.

How can I verify the A1 rating is actually speeding up Android app launches on my Chromebook?

Open several installed Android apps and compare launch times to internal storage; the A1 rating means the card meets the random-read threshold for faster app loading.

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