GravityCS by Tuxera File System Connectivity Suite


The go-to choice for exFAT® support

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.

Fail-safe exFAT storage driver

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™.

High I/O throughput exFAT driver

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.

High-performance exFAT driver

Optimized exFAT for 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.

exFAT driver for Android, Linux, RTOS

Customized exFAT solution for any environment

Microsoft exFAT by Tuxera is a high-performance Linux® kernel module. We precision-tune it for the best performance on any platform, whether it’s Android™, Linux®, Chrome OS™, Firefox OS™, Tizen®, or proprietary RTOS deployments.

Legally safe Microsoft exFAT driver

Compatible exFAT driver for all platforms

We have a long-standing partnership with Microsoft, since 2008. This cooperation on business, technical, and legal aspects ensures we deploy Windows-compatible file systems on any platform.

exFAT driver SD specifications

Supports all exFAT specifications

Our commercial exFAT solution is based on Microsoft and SD Association specifications. Tuxera is an active 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

Fully legal exFAT

Faster time to market

Smart bundle pricing


100% fail-safe, power-safe

Everything’s stored safe and sound. With Tuxera’s proprietary fail-safe technology, videos, pictures, and other files are saved during unexpected power losses or if the external storage is suddenly removed.

Built-in check and repair

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 to ensure file system consistency, fix corrupted volumes, and recover lost files.

All-inclusive tools and driver package

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

Full-service tech support

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.

Quality-assured storage software

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.


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.



Automotive infotainment (IVI) systems


Action cameras

Get more technical info, or contact us for software evaluations and pricing quotes for Microsoft exFAT by Tuxera




Microsoft and exFAT are the registered trademarks of Microsoft in the U.S and other jurisdictions. Linux is the registered trademark of Linus Torvalds in the U.S. and other countries. Tizen is a registered trademark of The Linux Foundation. Firefox OS is a trademark of Mozilla. Android and Chrome OS are trademarks of Google LLC. SD, microSD, and microSDXC are trademarks of SD Association.

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Tuxera continues to serve our global customers during the COVID-19 pandemic, while ensuring the well-being of our employees and their families. Read the full announcement.