Gigabyte BRIX GA-BSi7A-6500

[maschenazi]

Gigabyte BRIX GA-BSi7A-6500
Hello
Proud new owner of this little beast. It got it coupled with a Samsung 950 PRO M.2 NVM express and a pair of HyperX Impact DDR4's and it absolutely flies.
A little bit on the noisy side when under stress, more than I expected;  any suggestions for keeping it down?
Anybody knows what is the key to show the boot selection menu during POST?
Thanks

[maschenazi]

Just to answer my own question, in case somebody else is looking for this info, the boot selection key is F12