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Small black microSD card with red label and full-size adapter

SanDisk

SanDisk Extreme Go microSDXC 256GB 240MB/s SDSQXGN-256G-GN6MN memory card

SKU CH-9VS2-WT3NR

A 256GB microSDXC card with 240MB/s read and 160MB/s write speeds, rated U3 V30 A2 for 4K video and fast app loading

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classUHS-I U3 4K V30 A2
  • Max read speedUp to 240 MB/s
  • Write throughputUp to 160 MB/s
  • Product typeMicroSDXC

Capacity 256GB

  • Read speeds up to 240MB/s for rapid file transfers
  • Write speeds up to 160MB/s for smooth 4K video capture
  • U3 and V30 ratings guarantee sustained recording performance
  • A2 rating loads apps faster on Android devices
  • Waterproof, shock proof, X-ray proof and magnet proof durability

What this microSDXC card is and who it serves

The SanDisk Extreme Go microSDXC 256GB card delivers UHS-I speeds with U3, V30 and A2 ratings. It is built for enthusiasts and creators who record 5K point-of-view or 4K UHD video on Android devices, laptops or handheld gaming consoles. The bundled adapter extends compatibility to full-size SD slots.

Suited for 5K and 4K capture.

This card suits users who need sustained write performance for high-resolution video and quick app loading on supported devices. It is not for workflows that require UHS-II or UHS-III bus speeds, nor for devices that demand video speed classes beyond V30.

Read speed up to 240MB/s decides fit

The maximum read speed of 240MB/s sets the transfer ceiling for offloading large video files. Write speed reaches 160MB/s. If your device or card reader cannot utilise UHS-I U3 bandwidth, the extra headroom will not be realised.

How it compares

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

Price $65.99
Pricier than about 60% 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 $257.77 per TB
Cheaper than about 68% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExtreme Go
Model nameSDSQXGN-256G-GN6MN
Part numberSDSQXGN-256G-GN6MN
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I U3 4K V30 A2
Max read speedUp to 240 MB/s
Write throughputUp to 160 MB/s
Storage
Memory card formatMicroSD

Other versions of this model

5 more in the same range

Questions about this item

Does this microSDXC card fit a standard SD card slot using the included adapter?

Yes, the supplied adapter converts the microSDXC form factor to full-size SD so it can be used in cameras, laptops or card readers that only accept standard SD cards.

What is the correct way to insert the card so the UHS-I interface runs at up to 240MB/s read and 160MB/s write?

Insert the card label-side up until it clicks, then format it in the host device using the exFAT file system; skipping the in-device format is the step most people miss and can limit speed.

When should I consider replacing the card given its A2 rating and 256GB capacity?

Replace it if you notice sustained write speeds dropping well below the 30MB/s V30 minimum, if the SanDisk app reports health warnings, or after several years of heavy 4K/5K recording workloads.

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