Reliable, fail-safe embedded exFAT file system

Our commercial-grade file system implementation, Microsoft exFAT by Tuxera, adds external storage support for USB drives and SD™ memory cards larger than 32 GB to any device. The leading OEMs, ODMs, car makers, and Tier-1 suppliers choose Microsoft exFAT by Tuxera for fast, seamless data transfers in the latest consumer electronics and smart cars.

Why choose Microsoft exFAT by Tuxera

A must-have for exFAT storage support

Microsoft exFAT by Tuxera brings plug-and-play support for high-capacity flash storage including USB drives, external HDD/SSD, and all types of SD memory cards including SD™, SDHC™, SDXC™, microSD™, microSDHC™, and microSDXC™.

Maximum data transfer speeds

With Microsoft exFAT by Tuxera, you get the maximum I/O throughput out of any device. Plus, our software reliably handles simultaneous recording, viewing, and uploading of several ultra-HD streams – even in embedded environments with limited resources.

Portable to any environment

Tuxera's exFAT file system implementation runs seamlessly on a wide variety of operating systems like Linux and Android, real-time operating systems, and even on embedded devices without an RTOS. Our exFAT solution is designed with portability in mind – it runs in embedded microcontrollers with limited system resources with as low as 16 KB of RAM.

Premium user experience

Our storage software is optimized for the environment it’s embedded in. That means device users get a premium experience with reliable data storage, longer memory card lifetime, improved responsiveness when accessing stored content, and more available CPU to run their favorite apps.

Supports all exFAT specifications

Our commercial exFAT solution is based on Microsoft® and SD Association specifications. Tuxera is a board member of the SD Association, and we’re also the main driver behind SDXC adoption, an international standard for high-capacity SD memory cards.

Easy Microsoft exFAT patent licensing

Tuxera has been a Microsoft partner since 2009 – and their first file system partner. We’re also a part of the Microsoft exFAT licensing program. With our special arrangement with Microsoft, you can purchase our proprietary exFAT file system implementation, already covered by a full Microsoft exFAT patent license. This means:

  • Hassle-free, licensed software
  • Faster time to market
  • Fully legal exFAT
  • Smart bundle pricing
See Microsoft file system partners

Value-added features with Tuxera's
exFAT implementation

Our cloud-based autobuild system ensures up-to-date, immediate software integration and delivery. Plus, our engineers are on call to help you through every stage of your product’s lifetime, including full integration support.

Our full implementation package comes with a built-to-spec, ready-to-run file system driver, all the file system and benchmarking tools you need, intensive device testing, our patented fail-safe technology, and full-service support.

Errors can cause data loss – or worse – damage device hardware. Tuxera file systems go beyond other alternatives to bring you volume check and repair tools that ensure file system consistency, fix corrupted volumes, and recover lost files.

All the software we build goes through extensive testing. We have our own state-of-the-art device testing lab where we test for interoperability, reliability, functionality, and performance.

Everything’s stored safe and sound. With Tuxera’s proprietary fail-safety technology your system can recover from unexpected shutdown, power loss, or storage removal. We can optimize the level of robustness and performance according to your specific use case.

Technical data and resources

Platform support

Supports Android, Chrome OS, Linux, and real-time operating systems like QNX and ThreadX, plus resource-constrained embedded systems.

Standard conformance

Conforms to the Microsoft exFAT file system specification and the SD File System Specification developed by the SD Association (SDA).

Supported architectures

ARM, ARM64, Intel x86/x86_64 or compatible, MIPS, MIPS64, PowerPC, SH4 – virtually any 32-bit or 64-bit platforms.

Storage hardware

Support for all flash-based storage types such as SD cards, eSD, CF cards, SSD, USB-connected storages, SATA, eSATA, and eMMC.

Datasheets & specs
Microsoft exFAT by Tuxera specifications

Microsoft exFAT by Tuxera brings essential plug-and-play compatibility for exFAT®-formatted USB storages and SD cards,…

Microsoft exFAT by Tuxera datasheet

Microsoft exFAT by Tuxera is our commercial-grade exFAT file system implementation that’s optimized for a premium user…

When to use Microsoft exFAT by Tuxera

Microsoft exFAT by Tuxera is suitable for any device or system that requires support for memory cards larger than 32 GB, or file sizes greater than 4 GB.

IVI, infotainment, and digital cluster

Automotive infotainment
(IVI) systems

car sensors icon


Industrial applications

Mobile devices

Medical and
wellbeing devices

Consumer electronics

How we helped customers with Microsoft exFAT by Tuxera


For software evaluations, pricing quotes, or more technical info for Microsoft exFAT by Tuxera, get in touch with us.

Pricing and evaluations

*Microsoft, exFAT, and ThreadX are the registered trademarks of Microsoft in the U.S and other jurisdictions. QNX is a trademark and brand of BlackBerry Limited, Waterloo, Ontario, CA. Linux is the registered trademark of Linus Torvalds in the U.S. and other countries. Android and Chrome OS are trademarks of Google LLC. SD, microSD, and microSDXC are trademarks of SD Association.