...
PFsense 2.7 community
Note: versions below 2.7 do not have drivers for intel nics and SFP
Terminal software:
Putty
Alternatively, Tio can also be used.
known TIO limitation: in BIOS, the currently selected option is displayed in the same color as the background, which makes it not visible, yet it is still fully functional.
USB flash disk: Kingston Data Traveler
...