I have an old HP proliant ml150 g6 that I am going to use for handbrake encoding. It was originally a single quad core cpu. I bought two second hand 5540 xeons, when I installed them the server now requires another system fan to be installed, I have plenty of pwm fans and would like to use one of these rather than buying a $30 fan.
However when I plugged the pwm fan into the fan header the fan does not work. I'm thinking that it is the wiring but I'm not familiar enough with wiring to figure it out and I don't want to burn anything out. Connector on the motherboard
the pwm fan that I would like to use
the connector on one of the existing fans
However when I plugged the pwm fan into the fan header the fan does not work. I'm thinking that it is the wiring but I'm not familiar enough with wiring to figure it out and I don't want to burn anything out. Connector on the motherboard


