Windows exFAT (Extended File Allocation Table) is a proprietary file system designed especially for flash drives. exFAT can be used where the NTFS file system is not a feasible solution, due to data structure overhead, or where the file size limit of the standard FAT32 file system is unacceptable. exFAT is also supported in a number of media devices such as modern flat panel TVs, media centers and portable media players.