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Small rectangular microSD card with adapter, black plastic finish

SanDisk

SanDisk SDSQXFN-512G-GN4NN 512GB microSD Express microSDXC 210MB/s Adapter memory card

SKU CH-DC37-1ZVPW

A 512 GB microSD Express card with PCIe-NVMe interface delivering up to 880 MB/s read, 650 MB/s write and 210 MB/s sustained write for Nintendo Switch 2, cameras and PCs

  • Total capacity512 GB
  • Memory card formatMicro SDXC
  • Speed classUHS-I, U3, C10, A1
  • Max read speedUp to 880 MB/s
  • Write throughputUp to 650 MB/s
  • Product typeMicroSDXC
  • Up to 880MB/s read speed for rapid data access
  • Up to 650MB/s write speed enables fast content creation
  • 210MB/s sustained write maintains performance during long recordings
  • Works with Nintendo Switch 2 for expanded gaming storage
  • PCIe-NVMe interface with UHS-I backward compatibility supports future and current devices

512GB microSD Express for Gaming & Camera

This 512GB microSD Express card uses a PCIe NVMe interface to reach up to 880MB/s read and 650MB/s write speeds. It is built for Nintendo Switch 2 and works with cameras and PCs. The card carries U3, C10 and A1 ratings for sustained performance.

Simple Slot Install with Adapter Included

Installation is a direct slot insert; the bundled adapter lets you use it in full-size SD slots. The card is waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof and wear-out proof. SanDisk ThermAdapt manages heat through dynamic adaptive thermal control.

PCIe NVMe Speed Needs Compatible Reader

Full 880MB/s read and 650MB/s write require a PCIe NVMe-capable reader such as the SanDisk PRO-READER SD Express Dual Card. With UHS-I or UHS-II devices the card falls back to UHS-I speeds. Sustained write is rated at 210MB/s. Transfer examples: 2-hour HD movie in under 3.5 seconds; 60 minutes of 4K 30 fps video in under 70 seconds; 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 $115.99
Pricier than about 75% of the 1,947 comparable items (median $46.99).
Total capacity 512 GB
Higher than about 90% of the 1,132 comparable items (median 64 GB).
Price per TB $226.54 per TB
Cheaper than about 75% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExpress
Model nameSDSQXFN-512G-GN4NN
Part numberSDSQXFN-512G-GN4NN
Total capacity512 GB
Product typeMicroSDXC
Performance
Speed classUHS-I, U3, C10, A1
Max read speedUp to 880 MB/s
Write throughputUp to 650 MB/s
Storage
Memory card formatMicro SDXC

Questions about this item

How can I verify the card is sustaining 210MB/s write after setup?

Use a benchmark tool that reports sustained sequential write; the card is rated for 210MB/s sustained write when the host supports the PCIe-NVMe interface.

What accessories are included and which are sold separately?

The package includes the 512GB microSD Express card and a microSD-to-SD adapter; the SanDisk PRO-READER SD Express Dual Card is sold separately.

Why choose the 512GB Express version over a standard UHS-I card?

The Express card delivers up to 880MB/s read and 650MB/s write via PCIe-NVMe, roughly 4.4 times faster than the fastest UHS-I cards, and transfers 60 minutes of 4K UHD video in under 70 seconds with the PRO-READER.

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