these fans use 4A of current-this is quite a lot. I am not sure that they can be run off of the 4 pin connector on the top of the miner-maybe someone can comment on this.
they could be run from the PSU directly through molex adapter, but then they will always blast at the maximum speed (no PWM)
You could always pull the 12V and ground lines from the SATA/Peripheral/Minifit connector and keep the PWM and tach signals on the 0.1" fan connector.