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Small rectangular microSD card with gold contacts and matte finish

SanDisk

SanDisk 128GB microSD Express Card SDSQXFN-128G-GN4NN memory card

SKU CH-61VB-PSYCM

A 128GB microSD Express card delivering up to 880MB/s read and 480MB/s write speeds for Nintendo Switch 2

  • Total capacity128 GB
  • Memory card formatMicro SDXC
  • Speed classUHS-I, U3, C10, A1
  • Max read speedUp to 880 MB/s
  • Write throughputUp to 480 MB/s
  • Product typeMicroSDXC
  • Up to 880MB/s read speed cuts load times
  • Up to 480MB/s write speed records 4K video smoothly
  • 128GB capacity stores hours of gameplay footage
  • Works with Nintendo Switch 2 for next-gen gaming
  • Waterproof, temperature-proof, shock-proof durability protects data anywhere

Capacity and compatibility

This 128GB microSD Express card is built for the Nintendo Switch 2 and works with cameras and PCs that accept microSDXC media. It delivers up to 880MB/s read and 480MB/s write speeds, with 100MB/s sustained write performance for continuous recording.

PCIe-NVMe interface

The card uses a PCIe-NVMe interface to reach its peak transfer rates, yet falls back to UHS-I speeds when inserted in UHS-I or UHS-II devices. This dual-mode behaviour is the single specification that determines whether your hardware can exploit the advertised throughput.

Bundled adapter and optional reader

A standard microSD-to-SD adapter is included so the card fits full-size SD slots. Pairing the card with the SanDisk PRO-READER SD Express Dual Card (sold separately) enables transfers of 60 minutes of 4K 30 fps video in under 70 seconds and 1,000 10MP RAW photos in 51.7 seconds.

How it compares

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

Price $79.99
Pricier than about 66% 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 $624.92 per TB
Pricier than about 71% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExpress
Model nameSDSQXFN-128G-GN4NN
Part numberSDSQXFN-128G-GN4NN
Total capacity128 GB
Product typeMicroSDXC
Performance
Speed classUHS-I, U3, C10, A1
Max read speedUp to 880 MB/s
Write throughputUp to 480 MB/s
Storage
Memory card formatMicro SDXC

Questions about this item

What does the 880MB/s read speed mean once the card is in a real machine?

The 880MB/s read speed is the maximum transfer rate when the card is used in a PCIe-NVMe interface device; in UHS-I or UHS-II devices it performs at UHS-I speeds.

Which interface caps the speed in practice, and what standard limits it?

The card uses a PCIe-NVMe interface for its top speeds; when inserted into UHS-I or UHS-II hosts it is limited to UHS-I performance.

What does the card physically need to fit or mount in a device?

It is a microSDXC card and includes an adapter so it can be used in full-size SD slots.

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