Lattepanda Alpha / Delta Fan connector type

Hi,

I see that there is a 2 pin connector for the Fan. I want to replace with Noctua nf-a4x20 . This one has 3 pin connector. On the internet i found 3 pin to 2 pin connector. 
But the 2pin is very different then what's on the board.

What is the name of fan connector and what cable adapter do you advice ?


Best.