I found this answer in other topic.
CM Michiel 11
Posted April 12
The Hyper 212 PLUS is also compatible with socket AM4
You can use the same upgrade kit as for the Hyper 212 EVO.
It's not in our press release but we have added the Hyper 212 PLUS in the product description from the AM4 brackets.
CM Store EU:
MasterAir Pro 4
MasterAir Pro 3
Hyper 412 Series
Hyper 212 EVO
Hyper 212 X
Hyper 212 Plus
Let me know if you have any other question