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Red microSDXC card with black adapter, fingernail size

SanDisk

SanDisk Extreme PRO microSDXC 256GB UHS-I U3 V30 A2 250MB/s memory card + Adapter

SKU CH-GRR3-KJHBD

Capture 4K UHD video with U3 and V30 ratings, read up to 250MB/s, write up to 170MB/s, and load apps faster with A2 performance

  • Card typeMicroSD
  • TypemicroSDXC
  • Capacity256GB
  • Speed Class RatingUHS-I, U3, V30, 4K, A2
  • Read SpeedUp to 250MB/s
  • Write SpeedUp to 170MB/s

Capacity 256GB

  • Read up to 250MB/s with UHS-I U3 V30 speeds
  • Write up to 170MB/s for 4K UHD video capture
  • A2 rating loads apps faster on Android devices
  • Waterproof shockproof X-ray proof magnet proof durability
  • Includes SD adapter for wider device compatibility

256GB microSDXC for 4K capture

The SanDisk Extreme PRO microSDXC card delivers 256GB of storage built for 4K UHD video recording. Rated UHS-I U3 V30 and A2, it suits action cameras, drones and Android devices that demand sustained write performance. The bundled SD adapter lets you use the card in full-size slots without extra purchases.

Simple slot insertion with adapter

Installation is a single-step push into any microSD or SD slot; the included adapter converts the card to standard SD dimensions for broader device support. No drivers or formatting tools are required beyond the host device's built-in options. The main risk is inserting the card upside-down or forcing the adapter into a tight slot, which can bend the contact pins.

256GB capacity with 250MB/s read headroom

The 256GB capacity holds hours of 4K UHD footage or large app libraries on handheld consoles. Sequential read speeds up to 250MB/s and write speeds up to 170MB/s keep buffer clears fast during continuous burst shooting. The card reaches its limit when workflows demand sustained throughput beyond UHS-I specifications or when total stored data exceeds the 256GB ceiling.

Points forts

  • Read up to 250MB/s with UHS-I U3 V30 speeds
  • Write up to 170MB/s for 4K UHD video capture
  • A2 rating loads apps faster on Android devices
  • Waterproof shockproof X-ray proof magnet proof durability
  • Includes SD adapter for wider device compatibility

Caractéristiques

BrandSanDisk
Card typeMicroSD
SeriesExtreme Pro
ModelSDSQXCJ-256G-GS6MA
Part NumberSDSQXCJ-256G-GS6MA
TypemicroSDXC
Capacity256GB
Speed Class RatingUHS-I, U3, V30, 4K, A2
Read SpeedUp to 250MB/s
Write SpeedUp to 170MB/s
FeaturesSpeed class ratings of U3 and V30.
Offload your content faster with SANDISK QuickFlow technology.
Waterproof, humidity proof, shock proff, X-ray proof, and magnet proof.

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Questions sur cet article

How can I confirm the card is delivering the rated 250MB/s read and 170MB/s write speeds after setup?

Run a benchmark tool such as CrystalDiskMark on a PC using the included SD adapter; sequential results should approach 250MB/s read and 170MB/s write for the 256GB capacity.

What does the package contain and is anything else required to use it?

The box includes the 256GB microSDXC card and a full-size SD adapter; no extra hardware is needed for cameras, drones, laptops or handheld consoles with a microSD or SD slot.

Why choose this 256GB A2 V30 version over other capacities in the same series?

This 256GB model guarantees the full 250MB/s read and 170MB/s write rates plus A2 app-performance rating, making it the smallest capacity that hits the series' peak speeds.

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