We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular microSD card with gold contacts and red label, shown with full-size SD adapter

SanDisk

SanDisk SDSQXFN-256G-GN4NN 256GB microSD Express Card

SKU CH-550G-DTFA3

256 GB microSD Express card reaching 880 MB/s read and 650 MB/s write with U3, C10 and A1 ratings

  • Total capacity256 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
  • 256 GB capacity stores more games and media
  • Up to 880 MB/s read speed loads data quickly
  • Up to 650 MB/s write speed saves large files fast
  • 210 MB/s sustained write supports 4K video recording
  • Waterproof, shock-proof and temperature-proof for tough conditions

256GB microSD Express card for gaming consoles

This 256GB microSDXC Express card targets Nintendo Switch 2 owners and creators who need faster storage for games and 4K video. It carries U3, C10 and A1 ratings for sustained performance in compatible devices.

Bundled adapter enables full-size SD slots

The included microSD-to-SD adapter lets the card work in standard SD readers and cameras. Without an SD Express reader the card falls back to UHS-I speeds, so the adapter alone does not unlock the higher transfer rates.

PCIe-NVMe interface requires host support

Maximum read and write speeds of 880MB/s and 650MB/s only appear with devices that implement the PCIe-NVMe interface. In UHS-I or UHS-II hosts the card operates at lower UHS-I speeds, limiting transfer performance.

How it compares

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

Price $83.99
Pricier than about 68% 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 $328.09 per TB
Cheaper than about 56% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExpress
Model nameSDSQXFN-256G-GN4NN
Part numberSDSQXFN-256G-GN4NN
Total capacity256 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

Does the 256GB microSD Express card need any maintenance or replacement after extended use?

The card is rated as wear-out proof, so no routine maintenance or scheduled replacement is required under normal operation.

What is the first limit reached during sustained write workloads?

Sustained write speed is specified at 210MB/s, which becomes the bottleneck before the peak 650MB/s figure.

How much heat or power does the card generate when running all day?

SanDisk ThermAdapt uses a specially designed enclosure and controller with dynamic adaptive thermal management to keep devices from overheating during continuous operation.

More in SD & MicroSD Memory Cards

Similar items