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Small red and white microSDXC card with Nintendo Switch branding

SanDisk

SanDisk 256GB microSDXC UHS-I Memory Card (SDSQXAO-256G-GNCZN)

SKU CH-5H45-VKM52 MPN SDSQXAO-256G-GNCZN

A 256GB microSDXC card with UHS-I speeds up to 100MB/s read and 90MB/s write, officially licensed for Nintendo Switch

  • Total capacity256 GB
  • Speed classUHS-I
  • Max read speedUp to 100 MB/s
  • Write throughputUp to 90 MB/s
  • Product typeMicroSDXC
  • Key featuresOfficially-licensed memory card for the Nintendo Switch Inst

Series Mario Star 256GB

  • Officially licensed for Nintendo Switch
  • 256GB capacity stores multiple games and media
  • Read speeds up to 100MB/s load games faster
  • Write speeds up to 90MB/s capture screenshots and videos
  • UHS-I speed class rating ensures reliable performance

Nintendo Switch licensed storage

This officially licensed microSDXC card adds 256GB of capacity to the Nintendo Switch game system. It is built for players who want to keep multiple titles, screenshots and videos on a single card without swapping media. The UHS-I interface delivers read speeds up to 100MB/s and write speeds up to 90MB/s for quicker game loading. It suits anyone expanding the internal storage of a Switch console.

Passive operation with no thermal load

The card has no moving parts and draws power directly from the console slot, so it produces no audible noise and adds negligible heat during normal use. Power consumption scales with the UHS-I bus activity and stays within the limits of the host device. There are no fans, heatsinks or external power requirements to consider. It runs silently in handheld or docked mode.

Consistent throughput during extended play

Sustained read and write rates remain at the rated UHS-I limits during long gaming sessions or large file transfers. The flash memory maintains performance without thermal throttling because the card generates minimal heat. Write speeds up to 90MB/s support continuous capture of gameplay footage. The card is tested for reliability under the access patterns typical of Switch titles.

How it compares

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

Price $58.99
Pricier than about 56% 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 $230.43 per TB
Cheaper than about 74% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Model nameSDSQXAO-256G-GNCZN
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I
Max read speedUp to 100 MB/s
Write throughputUp to 90 MB/s
Size & build
Shipping weight0.02 kg
Package size152 × 103 × 8 mm

Other versions of this model

5 more in the same range

Questions about this item

How do I install the SanDisk 256GB microSDXC card in my Nintendo Switch, and what step do people often miss?

Power off the console, open the kickstand, insert the card label-side up until it clicks, then power on and format it in System Settings — skipping the format step leaves the card unreadable.

What maintenance or replacement will this 256GB microSDXC card need over time?

Flash memory wears with write cycles; if the card slows, shows errors or fails to mount, replace it — there is no user-serviceable part or firmware update.

What limit appears first during sustained writes to this UHS-I card rated at 90MB/s write?

The 90MB/s sequential write ceiling is reached before thermal throttling or capacity fill becomes the bottleneck.

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