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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

  • Card typeMicro SDXC
  • TypemicroSDXC
  • Capacity128GB
  • Speed Class RatingUHS-I, U3, C10, A1
  • Read SpeedUp to 880MB/s
  • Write SpeedUp to 480MB/s
  • 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.

Highlights

  • 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

Specifications

BrandSanDisk
Card typeMicro SDXC
SeriesExpress
ModelSDSQXFN-128G-GN4NN
Part NumberSDSQXFN-128G-GN4NN
TypemicroSDXC
Capacity128GB
Speed Class RatingUHS-I, U3, C10, A1
Read SpeedUp to 880MB/s
Write SpeedUp to 480MB/s

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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