Unleash your creative potential and dive into new experiences with SanDisk microSD Express, the next-gen microSD card for those who refuse to settle. Now with a PCIe Gen 3-NVMe interface, the new card delivers performance comparable to our mainstream portable SSD.*** Up to 4.4 times faster than our fastest microSD UHS-I cards, they enable exponentially faster camera roll offloads and 2-hour HD movie (2GB) download transfers in less than 3.3 seconds while using SanDisk PRO-READER SD Express Dual Card** (sold separately). Start gaming faster and explore virtual worlds that appear more realistic than ever. Create next-level immersive content with a card that supports up to 5.3K video capture today and up to 8K video in possible new devices. SanDisk ThermAdapt technology helps keep heat generated by high speeds within reliable operating limits with a specially designed enclosure and an adaptive thermal controller. Backwards compatible with microSD UHS-I devices, SanDisk microSD Express technology readies youthe next generation of creators and explorersfor the future of superspeed devices.

Ready for Tomorrow

Ready for future superspeed products with PCIe-NVMe interfaces and performs at UHS-I speeds when used 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 60 minutes of 4K UHD video shot at 30 fps in just less than 70 seconds and 1,000 10MP RAW photos in less than a minute (51.7 seconds) when paired with 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.

Heat Management Reimagined

SanDisk ThermAdapt helps keep devices from overheating with a specially designed enclosure and controller that uses dynamic adaptive thermal management.

Trust Us With Your Content

Experience reliable performance and peace of mind with a lifetime limited warranty.

Get ready for tomorrow

A PCIe 3.1 NVMe interface and a standard microSD UHS-I interface make this card compatible with todays devices and primed for future superspeed products.

Exponentially faster performance

Up to 4.4 times faster read speeds than our fastest microSD UHS-I card that have adopted a version of SanDisk QuickFlow technology, microSD Express cards support speeds comparable to our mainstream portable SSD.***

[512GB] 512GB* microSD Express cards deliver up to 880MB/s** read speeds, up to 650MB/s** write speeds, and 220MB/s** sustained write speeds, when used with SanDisk PRO-READER SD Express Dual Card (sold separately).

A massive time-saver

A microSD Express card reduces your wait time significantly. When paired with the SanDisk PRO-READER SD Express Dual Card (sold separately), you can transfer 60 minutes of 4K UHD video shot at 30 fps in just less than 70 seconds and 1,000 10MP RAW photos in less than a minute (51.7 seconds).**

Durability you can count on

Adventure without worry knowing the microSD Express cards, like our standard microSD 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

SanDisk knows microSD Express inside and out. We helped initiate the standard and continue to drive its development to this day, just as we led development of the microSD, microSD UHS-I, and microSD UHS-II card formats. We use proprietary Flash Management Techniques to produce highly stable memory. And we back the cards with a lifetime limited warranty.

Heat Management Reimagined

SanDisk ThermAdapt helps keep devices from overheating with a specially designed enclosure and controller that uses dynamic adaptive thermal management.

* 1GB=1,000,000,000 bytes. Actual user storage less.

** [512GB] Up to 880MB/s read speeds. Up to 650MB/s write speeds. 220MB/s minimum sustained write speed. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.

** [256GB] Up to 880MB/s read speeds. Up to 650MB/s write speeds. 210MB/s minimum sustained write speed. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.

** [128GB] Up to 880MB/s read speeds. Up to 480MB/s write speeds. 100MB/s minimum sustained write speed. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.

*** Based on internal testing with the SanDisk PRO-READER SD Express Dual Card against the 1TB-2TB SanDisk Portable SSD.

Compatible device required. Full HD (1920 x 1080), 4K (4096x2160), 4K UHD (3840x2160), 5.3K (5312x2988), and 8K (7,680x4,220) video support may vary based upon host device, file attributes and other factors. See www.sandisk.com/HD.

Card only. See product packaging or www.sandisk.com/proof for additional information and limitations.

30-year warranty in Germany, Canada and regions not recognizing lifetime warranty. See www.sandisk.com/wug.

Based on internal testing with the SanDisk PRO-READER SD Express Dual Card against the 128GB-512GB SanDisk Extreme PRO UHS-I microSDXC card with SanDisk Professional PRO-READER SD & microSD. Performance may be lower depending upon host device, interface, usage conditions and other factors.

See Western Digital White Paper- Flash 101 and Flash Management. A detailed overview of flash and flash management (August 2018): https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/collateral/white-paper/white-paper-sandisk-flash101-management.pdf.

See Flash Memory Summit, 2023 Flash Memory Timeline: https://www.flashmemorysummit.com/English/PDFs/FMS2023-Timeline.pdf

SanDisk, the SanDisk logo, QuickFlow, SanDisk QuickFlow and ThermAdapt are registered trademarks or trademarks of SanDisk Corporation or its affiliates in the US and/or other countries. NVMe is a trademark of NVM Express, Inc. PCIe is a trademark of PCI-SIG. All other marks are the property of their respective owners. Product specifications subject to change without notice.

2025 SanDisk Corporation or its affiliates. All rights reserved.

First things first

Significant technology innovations take time to manifest. The floating-gate EEPROM, invented by SanDisks founder in 1976, made flash storage possible years later in 1980. The first SD card from SanDisk and our collaborators arrived a year before the first SD-compatible digital camera in 2000. The advent of microSD Express cards signals the coming of higher performance devices, with many laptops from well-known computer brands already shipping with SD Express and microSD Express slots.

Compatibility

Compatible with a range of 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.