I like BlackMagic products, however the one thing I do not understand is why they make TV Studio products with such noisy fans.
In my small office these fans were driving me nuts to the point where I had to do something about it.
Please see the two repair guides I put up on IFIXIT.
BlackMagic Design ATEM Television Studio:
https://www.ifixit.com/Guide/BlackMagic+ATEM+Television+Studio+Quiet+Fan+Upgrade/113536
BlackMagic Design Hyperdeck Studio Mini
https://www.ifixit.com/Guide/BlackMagic+Hyperdeck+Studio+Mini+Fan+Replacement/113533
BlackMagic Design ATEM Television Studio & HyperDeck Studio Mini - Quiet Fan Replacement
-Kevin