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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

  • Total capacity128 GB
  • Speed classUHS-I / U3 / Class 10 / A2 / V30
  • Max read speed190 MB/s
  • Write throughput90 MB/s
  • Product typeMicroSDXC
  • Key featuresUp to 190 MB/s read speed, up to 130 MB/s write [256 GB-1 TB

Capacity 128GB

  • 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.

How it compares

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

Price $27.99
Cheaper than about 68% of the 1,947 comparable items (median $46.99).
Total capacity 128 GB
Higher than about 60% of the 1,132 comparable items (median 64 GB).
Price per TB $218.67 per TB
Cheaper than about 77% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExtreme
Model nameSDSQXAA-128G-GN6MA
Total capacity128 GB
Product typeMicroSDXC
Performance
Speed classUHS-I / U3 / Class 10 / A2 / V30
Max read speed190 MB/s
Write throughput90 MB/s
Size & build
Shipping weight0.01 kg
Package size157 × 104 × 8 mm

Other versions of this model

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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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