From Robotics and Intelligent Vehicle Research Lab
On a Ubuntu system, you can install the exFAT implementation from their PPA.
Add the PPA to your sources list by running
sudo add-apt-repository ppa:relan/exfat
In your favourite terminal emulator install the fuse-exfat and the exfat-utils packages:
sudo apt-get update && sudo apt-get install fuse-exfat exfat-utils