Get a small, high rpm fan (3-4cm in diameter, they are usually speedy ones), hide it in a small box, cover by foam if still noisy, plug in as factory fan. Noctua fans connect to 12V directly or by a regulator. Motherboard should detect hi speed of minifan and go
The noctua fans I bought are the 4-pin ones with the speed regulator on them.
Yours is a novel idea, but - how would I power the Noctua fans if I am using the headers on the miner to run those little high-speed fans?
The noctua need to be returned they are not good enough
I have used more then 50 different fans. With miners.