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Small red and black microSDXC card with full-size SD adapter

SanDisk

SanDisk Extreme SDSQXAF-064G-GN6MA 64GB microSDXC memory card

SKU CH-GBGY-0PDVR MPN SDSQXAF-064G-GN6MA

A 64GB microSDXC card rated UHS-I U3 and V30 for 4K video, with up to 100MB/s read and 60MB/s write speeds, plus temperature, water, shock and X-ray proofing

  • Card typeMicroSD
  • TypemicroSDXC
  • Capacity64GB
  • Speed Class RatingUHS Speed Class 3
  • Read SpeedUp to 100MB/s
  • Write SpeedUp to 60MB/s
  • Up to 100MB/s transfer speed moves large files quickly
  • U3 and V30 ratings sustain 4K Ultra HD video recording
  • 64GB capacity stores hours of high-resolution footage
  • Temperature, water, shock and X-ray proof for extreme environments
  • Includes RescuePRO Deluxe software for data recovery

64GB microSDXC for 4K capture

The SanDisk Extreme SDSQXAF-064G-GN6MA is a 64GB microSDXC card rated UHS Speed Class 3 and Video Speed Class 30. It targets drone pilots, action-camera users and Android smartphone owners who need sustained write performance for 4K Ultra HD and Full HD video. The bundled SD adapter allows use in full-size card slots.

UHS-I limits peak throughput

The UHS-I interface caps sequential read at 100MB/s and write at 60MB/s, so sustained 4K recording stays within spec but high-bitrate bursts or simultaneous multi-stream capture can saturate the bus. V30 guarantees 30MB/s minimum sequential write, yet random I/O for app loading depends on the host controller and file system overhead.

Simple insert with one common pitfall

Installation is a straight push into the device slot or the supplied adapter; no drivers are required on modern operating systems. The frequent issue is counterfeit cards sold under the same model number, which fail speed tests and lose data. Verify the serial on SanDisk’s site and format with the official SD Formatter tool before first use.

Highlights

  • Up to 100MB/s transfer speed moves large files quickly
  • U3 and V30 ratings sustain 4K Ultra HD video recording
  • 64GB capacity stores hours of high-resolution footage
  • Temperature, water, shock and X-ray proof for extreme environments
  • Includes RescuePRO Deluxe software for data recovery

Specifications

BrandSanDisk
Card typeMicroSD
SeriesExtreme
ModelSDSQXAF-064G-GN6MA
TypemicroSDXC
Capacity64GB
Speed Class RatingUHS Speed Class 3
Read SpeedUp to 100MB/s
Write SpeedUp to 60MB/s
FeaturesBuilt for extreme conditions temperature proof, water proof, shock proof, and x-ray proof
Delivers 4K Ultra HD and Full HD video recording and playback
Meets the new UHS Speed Class 3 (U3) and UHS Video Speed Class 30 (V30) for 4K UHD4
Up to 128GB for more space to catch the thrill
Shipping weight0.01 kg
Package size151 × 99 × 5 mm

Questions about this item

Should I choose the 64GB or 128GB Extreme card?

The 64GB model suits Full HD and 4K clips on a phone, drone or action camera; the 128GB version simply doubles that space for longer sessions.

What does the 100MB/s read speed mean when the card is in my camera?

It lets you offload 4K UHD and Full HD footage to a computer quickly, while the 60MB/s write speed keeps up with continuous recording.

How does the UHS-I U3 V30 rating limit real-world performance?

The UHS-I bus caps sequential throughput, so sustained writes stay at the rated 60MB/s and reads at 100MB/s — enough for 4K UHD but not for faster UHS-II workflows.

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