I compared visually the connectors on the fans for VIM-1 (which I bought previously for Pro VIM) and VIM-2 (which I got with my model VIM2 Max and I have already connected to the VIM2). Plug for VIM-2 is less than the fan of VIM-1. I was not able to connect the fan from VIM-1 to VIM-Board-2. Maybe I’m wrong and the representatives of Khadas correct me. Maybe I have a model VIM2 is not a standard connector option on the Board.
I just used the fan that is sold for the Rasp PI, It has to be mounted on top of the case rather than inside of it like the VIM blower is, but there’s a couple nice pluses… for one, it is much more powerful and is 5v, not 3v., and the best part? It is 100% silent, whereas the VIM blower is a loud whiny little thing.