removing mobo for heat sink fan?

Solution
Your board has a removable backplate. Its just that its kinda hard to manage replacing it while its in the case. But yeah you can still replace it without removing from the case.

Adrian Ocampo

Distinguished
It is better to remove your MB first so you could easily install the backplate of the hsf. In case that you can remove and replace the backplate while it is still in the case then its okay. :). Nice choice on the hyper 212 evo :)