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Small black microSDXC card with full-size SD adapter

SAMSUNG

SAMSUNG T7 microSDXC 256GB 170MB/s U3 V30 A2

SKU CH-FXWH-KWJVD

A 256 GB microSDXC card delivering up to 170 MB/s read speed with U3, V30 and A2 ratings for 4K video and fast app loading

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classUHS-I U3 4K A2 V30
  • Max read speedUp to 170 MB/s
  • Product typeMicroSDXC

Capacity 256GB

  • Up to 170 MB/s read speed moves large files quickly
  • U3 and V30 ratings sustain stable 4K video recording
  • A2 performance helps apps launch faster on phones and consoles
  • 256 GB capacity stores games, photos and 4K footage
  • 6-proof design resists water, temperature, X-rays, magnets, drops and wear

Everyday storage for creators and gamers

This Samsung T7 microSDXC card delivers 256 GB of capacity for photos, 4K video and game libraries. It suits casual gamers, amateur creators and everyday users who need reliable portable storage across multiple devices. The included adapter broadens compatibility with laptops and cameras.

Sustained write performance for 4K capture

UHS-I U3 and V30 ratings guarantee a minimum sequential write speed of 30 MB/s, keeping 4K video recording stable during long sessions. A2 application performance helps installed apps and games load quickly. Read speeds reach up to 170 MB/s for fast file transfers.

Capacity that defines the use case

The 256 GB capacity determines how many games, videos or RAW images you can carry at once. Buyers who need more storage for large 4K libraries or extended shoots should look at higher-capacity cards. This size balances space and cost for typical daily workflows.

How it compares

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

Price $67.99
Pricier than about 61% 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 $265.59 per TB
Cheaper than about 67% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSAMSUNG
Product lineT7 microSD
Model nameMB-MB256T
Part numberMB-MB256T
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I U3 4K A2 V30
Max read speedUp to 170 MB/s
Storage
Memory card formatMicroSD

Other versions of this model

5 more in the same range

Questions about this item

Will the T7 microSDXC get hot or draw extra power during all-day 4K recording?

The card has no active cooling and draws minimal power from the host device; heat and power use stay low during continuous reads and writes up to 170 MB/s.

What adapter or reader do I need to use this 256 GB card with my laptop?

The package includes a full-size SD adapter; plug the microSD card into that adapter and then into any SD slot or USB card reader that supports SDXC.

Can I keep using this card in an older camera that only takes UHS-I cards?

Yes, the card is UHS-I U3 V30 rated and works in any device with a microSDXC or SDXC slot, including older UHS-I cameras and consoles.

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