Hi as you know I have a nxzt apollo and at the back theres a fan but its not spinning (Not working) What could be the problem. Also I opened the case up because there was dust on the side but still the extra fan could cool my pc
If the fan is plugged in correctly then it most likely quit on you. With those seeing the 3 or 4pin plug try a different spot on the board to see if it works there. If 12v try a different opwer connector for the 120mm rear fan.