2 pieces 140mm Noctua high performance fans - NF-A14 iPPC-3000 PWM instead of the original 120mm fans. 2 pieces of ventilation adapter from 120mm to 140mm made of 1.5mm galvanized sheet metal. 1 extremely quiet 60mm Noctua fan - NF-A6x25 PWM. This is installed in the power supply and replaces the much louder original power supply fan. A 2-to-3-pin fan cable adapter is also installed in the power supply. The Bitmain Antminer S9 comes with the latest Braiins OS+ with autotuning and power target function. Operation possible from 380 to 1000 watts and even less power when separating hashboards. *The miner is cleaned with an air pressure nozzle to remove dust from the cooling fins. There may still be very small dust particles in the cooling fins and the miners may still be slightly dusty on the.
eBay