Setting Up BIOS and OS
Entering the BIOS isn't something I recommend for everyone, but in this case, we find that the UEFI is easy enough to use. Supermicro has a new EZ mode of operation where you can drag drives to change their boot order and check fan speeds or setup RAID. We prefer to use the more advanced UEFI firmware, so we hit "F7" to switch over.
The first thing you might want to do is to change your boot order, and to do this you just need to go over to the "Save & Exit" menu. You will be greeted with a huge list of boot options, we prefer to use UEFI mode instead of Dual mode (supports both legacy and UEFI devices for booting). If you have multiple drives you might need to go into the Hard Drive BBS Priority list, where you can choose which drive will show up in the boot menu.
Fan control can be found at the bottom of the "H/W Monitor" tab, where the default option is "Quiet". However, while our Corsair fans for the cooler did run in Quiet mode, our case fans did not, so we needed to use another mode.
"Customize" mode allows for users to set their own temperature and PWM rate levels, up to four for each header. The headers are high current headers on this motherboard, supporting up to 2A, so we had two fans on each header. If you want to set Temperature 3 and 4, you will need to change PWM2 to something lower than 100%.
You might also want to overclock your "K-series" CPU, and there is a whole overclocking tab dedicated to just that. You are able to manually set your overclock settings, and you can find our Supermicro OC guide for their Z390 series motherboards