What is your problem?
The mobo is LGA1150 socket and the 4790K is also LGA1150 socket.
You should have no problem locking it into place.
Just because the socket type matches the CPU, it doesn't necessarily follow that the actual CPU is supported by the existing BIOS version. That's why BIOS updates are released. The socket type has nothing to do with the OP's question, I expect he's already fully aware that the CPU fits the socket, that's not what he asked.