Sandisk

SanDisk 256 GB UHS-I [U3] microSD Express (sdsqxfn-256g-gn4nn)

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SKU:
21380972
MPN:
sdsqxfn-256g-gn4nn
Availability:
Usually ships the same or next business day. In stock at our IL warehouse.
Shipping:
Calculated at Checkout
Stock Update:
03/24/2026 07:08:49 PM PST
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$138.82

Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

Buy 2 and pay only $132.37 each 132.37
Buy 3 - 4 and pay only $129.89 each 129.89
Buy 5 - 8 and pay only $127.91 each 127.91
Buy 9 or above and pay only $125.41 each 125.41
Stock Update:
03/24/2026 07:08:49 PM PST

Description



This item is brand-new, factory sealed.

Unleash your creative potential and dive into new experiences with SanDisk microSD Express, the next-gen microSD card for those who refuse to settle. Offload your camera roll in record time and transfer a 2-hour HD movie download in less than 3.5 seconds while using SanDisk PRO-READER SD Express Dual Card (sold separately) - up to 4.4 times faster than our fastest microSD UHS-I cards. Start gaming faster and explore virtual worlds that appear more realistic than ever. On top of saving time, create next-level immersive content with a card that supports faster burst and sustained recording speeds than a SD UHS-II card. With the addition of a PCIe Gen 3-NVMe interface, the microSD Express card represents a massive step forward in the evolution of the microSD format with performance comparable to our basic portable SSD. SanDisk microSD Express cards work with current microSD UHS-I and UHS-II devices, supporting up to 5.3K video and 10MP RAW image capture. SanDisk ThermAdapt helps keep your devices from overheating with a specially designed enclosure and an adaptive thermal controller. SanDisk microSD Express technology readies youthe next generation of creators and explorersfor the future of superspeed devices. Compatibility Devices that include a microSDXC slot, including Android smartphones and tablets, action cams, drones, handheld gaming devices, and laptops. Devices that include microSD Express, microSD UHS-I, and microSD UHS-II slots. Performs at microSD UHS-I speeds when used with microSD UHS-I and microSD UHS-II devices. In The Box SanDisk microSD Express Card Product Features
Ready for Tomorrow: Ready for future superspeed products with a PCIe-NVMe interface and performs at UHS-I speeds with microSD UHS-I and UHS-II devices. Exponentially Faster Performance: Up to 4.4 times faster read speeds than our fastest microSD UHS-I cards with up to 880MB/s transfer speeds. Massive Time-Saver: Transfer a 2-hour HD movie in less than 3.5seconds and save up to 2.8 minutes transferring 60 minutes of 4K UHD video shot at 30 fps when paired with the SanDisk PRO-READER SD Express Dual Card (sold separately).11 Durability you can count on: Cards are waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof, and wear-out proof. Trust us with your content: Experience reliable performance and peace of mind with a lifetime limited warranty. Reliable File Recovery: Relax knowing that accidentally deleted files can be recovered by activating the two-year RescuePRO Deluxe file recovery service. Exceptional Capture: A video-ready card that captures brilliant 5.3K and 4K video, plus slow-motion Full HD footage. Durability you can count on: Cards are waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof, and wear-out proof. Trust us with your content: Experience reliable performance and peace of mind with a lifetime limited warranty.

Features

Compatibility:   
  • Devices that include a microSDXC™ slot, including Android™ smartphones and tablets, action cams, drones, handheld gaming devices, and laptops.
  • Devices that include microSD™ Express, microSD™ UHS-I, and microSD™ UHS-II slots.
  • Performs at microSD™ UHS-I speeds when used with microSD™ UHS-I and microSD™ UHS-II devices.
  • Nintendo Switch 2

 

Specs

Physical Characteristics
Thickness39.4 mil
Weight (Approximate)0.01 oz
Length0.6"
Width0.4"
General Information
Brand NameSanDisk
Manufacturer Website Addresshttp://www.wdc.com
Marketing InformationNext-level speed for next-level experiences.
Unleash your creative potential and dive into new experiences with SanDisk® microSD™ Express, the next-gen microSD™ card for those who refuse to settle. Offload your camera roll in record time and transfer a 2-hour HD movie download in less than 3.5 seconds while using SanDisk® PRO-READER SD Express Dual Card (sold separately)-up to 4.4 times faster than our fastest microSD™ UHS-I cards.
Start gaming faster and explore virtual worlds that appear more realistic than ever. On top of saving time, create next-level immersive content with a card that supports faster burst and sustained recording speeds than an SD UHS-II card.2 With the addition of a PCIe® Gen 3 NVMe™ interface, the microSD™ Express card represents a massive step forward in the evolution of the microSD™ format with performance comparable to a basic portable SSD.3 SanDisk® microSD™ Express cards work with current microSD™ UHS-I and UHS-II devices, supporting up to 5.3K video4 and 10MP RAW image capture. SanDisk® microSD™ Express technology readies you-the next generation of creators and explorers-for the future of superspeed devices.
HIGHLIGHTS | Ready For Tomorrow
Ready for future superspeed products with a PCIe® - NVMe™ interface, and performs at UHS-I speeds with microSD™ UHS-I and UHS-II devices.
Exponentially Faster Performance
Up to 4.4 times faster read speeds than our fastest microSD™ UHS-I cards10 with up to 880MB/s transfer speeds.
Massive Time Saver
Transfer 2-hour HD movie in less than 3.5 seconds1 and save up to 2.8 minutes transferring 60 minutes of 4K UHD video4 shot at 30 fps when paired with the SanDisk® PRO-READER SD Express Dual Card (sold separately).
Durability You Can Count On
Cards are waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof, and wear-out proof.
Trust Us With Your Content
Experience reliable performance and peace of mind with a lifetime limited warranty.
Reliable File Recovery
Relax knowing that accidentally deleted files can be recovered by activating the two-year RescuePRO® Deluxe file recovery service.
Exceptional Capture
A video-ready card that captures brilliant 5.3K and 4K video, plus slow-motion Full HD footage.
SanDisk® ThermAdapt™
SanDisk® ThermAdapt™ helps keep devices from overheating with a specially designed enclosure and controller that uses dynamic adaptive thermal management.
Product TypemicroSD Express
Product NamemicroSD Express microSD Card
ManufacturerWestern Digital Corporation
Manufacturer Part NumberSDSQXFN-256G-GN4NN
Technical Information
Maximum Read Speed880 MB/s
Application Performance ClassA1
Maximum Write Speed650 MB/s
Features
Storage Capacity256 GB
Speed Class RatingUHS-I (U3)

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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SanDisk 256 GB UHS-I [U3] microSD Express (sdsqxfn-256g-gn4nn)
$138.82