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Tiny black microSDXC Express card with gold contacts

Silicon Power

Silicon Power microSDXC Express 512GB SP512GBSTEI31V10 memory card

SKU CH-8G91-Y21Y0 MPN SP512GBSTEI31V10

A microSDXC Express card storing 512 GB with up to 880 MB/s read and 700 MB/s write speeds for Switch 2

  • 512 GB capacity stores large game libraries
  • Up to 880 MB/s read speed loads games faster
  • Up to 700 MB/s write speed saves captures quickly
  • SD Express 7.1 with PCIe Gen 3x1 and NVMe protocol enables high throughput
  • Dust proof design withstands over 10,000 insertions

microSDXC Express 512GB card

This microSDXC Express card delivers 512GB of storage using the SD Express 7.1 standard with a PCIe Gen 3x1 interface and NVMe protocol. Sequential read speeds reach 880MB/s and write speeds reach 700MB/s. It is designed for devices that support the SD Express specification.

Check device SD Express support

Verify that your host device explicitly supports SD Express cards before purchase. The card requires a compatible controller to achieve the stated 880MB/s read and 700MB/s write performance. Standard UHS-I or UHS-II slots will not provide the advertised speeds or full functionality.

Upgrade from UHS-II microSD cards

This card offers 2.7x faster performance compared to UHS-II microSD cards for compatible devices. The jump is worthwhile when your hardware supports SD Express and you need reduced game loading times or faster large-file transfers. It does not benefit systems limited to UHS interfaces.

Highlights

  • 512 GB capacity stores large game libraries
  • Up to 880 MB/s read speed loads games faster
  • Up to 700 MB/s write speed saves captures quickly
  • SD Express 7.1 with PCIe Gen 3x1 and NVMe protocol enables high throughput
  • Dust proof design withstands over 10,000 insertions

Specifications

No published specifications for this item yet.

Questions about this item

Does the package include an adapter or do I need to buy one separately?

The supplier title states the adapter is not included, so a microSD-to-SD adapter must be purchased separately if your device uses a full-size SD slot.

Is this 512 GB card the only capacity offered for the SP512GBSTEI31V10 model?

The model number SP512GBSTEI31V10 identifies this specific 512 GB variant; other capacities carry different model numbers.

What does the 880 MB/s read figure mean for actual game loading on a Switch 2?

The card reaches up to 880 MB/s read and 700 MB/s write via SD Express 7.1 and PCIe Gen 3x1, delivering roughly 2.7× the speed of a UHS-II card for faster game loads.

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