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Red SanDisk Extreme microSDXC card with full-size SD adapter

SanDisk

SanDisk Extreme microSDXC 128GB SDSQXAA-128G-GN6MA memory card

SKU CH-4F0M-BDDAB MPN SDSQXAA-128G-GN6MA

A 128 GB microSDXC card rated UHS-I U3, V30 and A2 with up to 190 MB/s read and 90 MB/s write speeds for 4K UHD capture

  • TypemicroSDXC
  • Capacity128GB
  • Speed Class RatingUHS-I / U3 / Class 10 / A2 / V30
  • Read Speed190MB/s
  • Write Speed90MB/s
  • FeaturesUp to 190MB/s read speed, up to 130MB/s write [256GB-1TB] 4K

Capacity 128GB

Struck-through versions exist but are not stocked here.

  • Fast app loading with A2 performance class
  • 4K UHD video capture at V30 sustained write speed
  • QuickFlow Technology cuts media transfer time
  • Rugged build resists shock, water, temperature and X-rays
  • 190MB/s read speed with compatible PRO-READER

SanDisk Extreme 128GB microSDXC Card

This UHS-I memory card targets photographers and videographers who need reliable capture of 4K UHD and Full HD footage. Its A2 rating also supports faster app loading on compatible Android devices. The bundled SD adapter lets the card work in full-size SD slots without extra cost.

QuickFlow Software and PRO-READER Compatibility

SanDisk QuickFlow Technology streamlines media offloads when paired with the SanDisk Memory Zone app for file management. Maximum read performance of 190MB/s requires the SanDisk Professional PRO-READER, which is sold separately. Without that reader, real-world transfer rates will be lower.

90MB/s Sustained Write Speed

The card guarantees up to 90MB/s write throughput, meeting V30 and U3 minimums for continuous 4K recording. Buyers who need the 130MB/s write speed shown for higher capacities should note that figure applies only to 256GB–1TB models, not this 128GB version.

Highlights

  • Fast app loading with A2 performance class
  • 4K UHD video capture at V30 sustained write speed
  • QuickFlow Technology cuts media transfer time
  • Rugged build resists shock, water, temperature and X-rays
  • 190MB/s read speed with compatible PRO-READER

Specifications

BrandSanDisk
SeriesExtreme
ModelSDSQXAA-128G-GN6MA
TypemicroSDXC
Capacity128GB
Speed Class RatingUHS-I / U3 / Class 10 / A2 / V30
Read Speed190MB/s
Write Speed90MB/s
FeaturesUp to 190MB/s read speed, up to 130MB/s write [256GB-1TB]
4K UHD and Full HD Video
Compatible with SanDisk Professional PRO-READER SD and microSD to achieve stated read speeds
Class 10, App Performance Class 1 (A1) [32GB], App Performance Class 2 (A2) [64GB-1TB], Video Speed Class 30 (V30), UHS Speed Class 3 (U3)
SanDisk Memory Zone included
RescuePRO Deluxe one year file recovery software (download offer)
SD adapter included
Shipping weight0.01 kg
Package size157 × 104 × 8 mm

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Questions about this item

How long will the 128GB microSDXC card last before it needs replacing?

The card is shock-, temperature-, water- and X-ray-proof, so physical wear is minimal; replacement is typically driven by capacity needs rather than a fixed lifespan.

What limits sustained write performance at 90MB/s during long 4K recording?

Continuous write speed is rated at 90MB/s; the V30 and U3 ratings guarantee a minimum 30MB/s, so the card itself is the limiting factor once the host can supply data fast enough.

Does the card run hot or draw extra power when used all day in a camera?

The card is temperature-proof and has no active components, so it generates negligible heat and draws only the standard microSD bus power during extended use.

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