SanDisk microSD Express Card 512GB
- 512 GB microSD Express, microSDXC
- 880 MB/s read, up to 650 MB/s write
- Nintendo Switch 2 compatible
- U3 and Class 10 speed ratings
- Drop, water, X ray and magnet proof
- Lifetime limited warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A very fast card for consoles, cameras and computers, listed as working with a Nintendo console. The top speeds need a matching device or reader, which is sold separately.
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ASIN: B0DTQ35NH6Model: SDSQXFN-512G-GN4NNCategory: MicroSD Cards
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Overview
Handheld gamers and creators who want a card with fast load times and fast capture get a microSD Express card here, built on a PCIe NVMe interface. It also works in current UHS-I and UHS-II devices and supports high resolution video and RAW image capture.
Express speeds help with fast game loading and quick offloading when paired with a compatible device or reader. The limitation is that the full speed needs matching hardware.
Who it's for
Console gamers and creators using devices that support microSD Express are the target. Owners of older devices will not reach the headline speeds, and shoppers who only need basic storage can look at ordinary cards.
Pros and cons
- Very high read speed
- Nintendo console compatible
- Drop and water proof listing
- Lifetime limited warranty
- Full speed needs Express hardware
- Reader sold separately
- Write speed is an up to figure
Performance notes
The card uses an Express interface, so read speeds reach the stated level only in compatible slots or readers. In older devices without Express support it works at the lower speeds those devices allow. A thermal controller is described to limit overheating.
Specifications
| Brand | Sandisk |
|---|---|
| Model | SDSQXFN-512G-GN4NN |
| Dimensions & fit | |
| Item Dimensions L x W | 0.59"L x 0.43"W |
| Weight | 0.26 g |
| Capacity & performance | |
| Memory Storage Capacity | 512 GB |
| Secure Digital Association Speed Class | Class 10, U3 |
| Media Speed | 650 |
| Read Speed | 880 megabytes_per_second |
| Compatibility & installation | |
| Compatible Devices | Camera, Gaming Console, Personal Computer |
| Warranty & support | |
| Warranty Description | Lifetime limited |
| Other details | |
| Flash Memory Type | Micro SDXC |
| Additional Features | Drop Proof, Magnetic Proof, Water Proof, Wearout Proof, X Ray Proof |
| Model number | SDSQXFN-512G-GN4NN |
Closest rivals on specs
Lexar Blue microSDXC Card 256GB- Memory Storage Capacity 512 vs 256 GB (+100%)
Samsung PRO Endurance microSDXC Card 128GB- Memory Storage Capacity 512 vs 128 GB (+300%)
GIGASTONE 4K microSDXC Card 128GB- Memory Storage Capacity 512 vs 128 GB (+300%)
Frequently asked questions
How do I use the SanDisk microSD Express card in my device?
Insert it in the card slot of a compatible device. The title lists Nintendo Switch 2, and the description says it also works in UHS-I and UHS-II devices at their own speeds.
Do I need a special reader?
For the fastest transfers, the description mentions the SanDisk PRO-READER SD Express Dual Card, sold separately.
Is it the same as a normal microSD card?
No. It is a microSD Express card with an NVMe style interface, though it also works in standard slots.