I was able to update the BIOS using the same USB port on the back side with F7 key. I have Dawson Canyon and June Canyon NUC – Ubuntu Desktop 16.04 LTS image
on the USB drive along with RUFUS. The problem is when I press F10 I dont see any USB drive to boot from. I have tried enabling and disabling secure boot, tried default settings with f9. Still dont see the USB drive to select as an option to boot from.