Hmm, my existing fans use 4 pin connections
https://www.amazon.com/Noctua-NF-A6x25-3-Pin-Premium-Cooling/dp/B009NQMESS/
You’ll have to convert the 3pin to 2pin
Discussion
the psu fan should be two pin
Ohh, yes of course. My bad, mixed up the fans on the miner and the PSU fan.
The fan on the PSU isn't a 4 pin though.