If Fast boot is enable, boot from Network / Optical / Removable devices and RAID configuration will be disabled. Also, video and USB devices (keyboards and drives) will not be available until after OS boot.
Removing the BIOS configuration jumper on the NUC allows you to update the BIOS and clear passwords only. The options to reset BIOS settings are 1) Pressing F9 from BIOS and 2) BIOS update.
If Fast Boot is enable and you need Boot Display Options (F2,F7,F10,F5); turn the NUC on, as soon as you are in the OS, unplug the power cord from the NUC then; plug it and turn the NUC on again the options will be available.