Arctos_Neofelis

So am building a computer for the first time in quite a long time and picked up an MSI 970 gaming mobo and a Versa h22 plus case. The case comes with 3 brass standoffs and I was wondering if these are just extra? The case appears to have already pre-built standoffs however the documentation included is almost useless regarding this information. Can anyone who has purchased this kind of case comment on if the 3 brass standoffs are needed or is this for mobos that might have different placement for a smaller form factor? Thanks!