exFAT (Extended File Allocation Table) is a proprietary, patent-pending[2] file system designed especially for USB flash drives.[3] Developed by Microsoft......
An experimental, open source Linux kernel module that supports the reading of exFAT files is currently under development.[15] A FUSE-based full-featured implementation is currently in beta status.[16] A proprietary, read/write solution, licensed and derived from the Microsoft exFAT implementation, is available for Android, Linux and other operating systems from Tuxera.
这些是wikipedia上的