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

SanDisk

SanDisk High Endurance microSDXC 256GB U3 V30 SDSQQNR-256G-GN6IA memory card

SKU CH-S5AC-0KWQH MPN SDSQQNR-256G-GN6IA

A 256 GB microSDXC card rated U3 and V30 for 4K dash-cam and home-monitoring recording up to 20,000 hours

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classUHS-I / U3 / Class 10 / V30
  • Max read speed100 MB/s
  • Write throughput40 MB/s
  • Product typeMicroSDXC

Capacity 256GB HIGH ENDURANCE

  • Built for up to 20,000 hours of continuous recording
  • Withstands temperature extremes, water, shock and x-ray exposure
  • Captures Full HD and 4K UHD video smoothly
  • 100 MB/s read speed moves footage to a computer quickly
  • Includes SD adapter for use in standard card slots

Dash-cam and surveillance card

The SanDisk High Endurance microSDXC card is built for continuous recording in dash cams and home monitoring systems. Its microSD form factor with included adapter fits standard slots in cameras and readers. The card targets users who need reliable, long-duration capture rather than burst-speed photography.

256 GB capacity with U3 V30 sustained write

Rated Class 10, U3 and V30, the card guarantees a minimum write speed of 30 MB/s, reaching up to 40 MB/s. That headroom handles Full HD 1920x1080 and 4K UHD 3840x2160 streams without dropped frames. Read speeds up to 100 MB/s move footage off the card quickly. The 256 GB model is rated for up to 20,000 hours of recording; heavier bit-rates or higher resolutions will reduce that window.

Rugged build tested for temperature, water.

SanDisk validates the card against harsh conditions: temperature-proof, waterproof, shockproof and x-ray-proof. That resilience suits windscreen-mounted cameras baking in summer or freezing in winter, and outdoor security units exposed to weather. The bundled adapter lets you slot the microSD into full-size SD readers for desktop ingest without a dedicated microSD slot.

How it compares

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

Price $55.99
Pricier than about 55% 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 $218.71 per TB
Cheaper than about 77% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineHigh Endurance
Model nameSDSQQNR-256G-GN6IA
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I / U3 / Class 10 / V30
Max read speed100 MB/s
Write throughput40 MB/s
Storage
Memory card formatMicroSD
Size & build
Shipping weight0.01 kg
Package size151 × 103 × 6 mm

Other versions of this model

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Questions about this item

Will the 100MB/s read speed of this U3 V30 card work properly in an older dash cam that only supports Class 10?

Yes, the card is rated Class 10, U3 and V30, so it will fall back to Class 10 speeds in older devices while still providing the 40MB/s minimum write speed needed for Full HD recording.

How can I confirm the card is delivering the rated V30 performance after installing it in my security camera?

Check that the camera records 4K UHD (3840x2160) or Full HD (1920x1080) without dropped frames, and verify sustained write speeds of at least 30MB/s using a PC benchmark tool if needed.

Does the package include the SD adapter shown in the title, or do I need to buy one separately for my card reader?

The supplier title confirms an adapter is included, so you can use the microSDXC card directly in full-size SD slots without an extra purchase.

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