The BIOS reports the fan connected to the front fan header as "outlet fan - rear panel" and the one connected to the rear fan header as "inlet fan - front panel", in other words, they are swapped around. Not a major problem but it is a bit annoying and could confuse some users.
It would be nice to have it fixed in the next BIOS update.
BIOS feature request
Also I noticed in the document describing BIOS options released by Intel an option called "Lowest Fan Speed", which allows a fan to be turned completely off when the system temperature is low enough. It would be very useful to have this option in the BIOS to further reduce noise, especially with systems having 2 fans installed. The second one could kick in only when required.