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ML115 G5 Fans - PWM?

Occasional Visitor

ML115 G5 Fans - PWM?

I am trying to find out whether the fans in my ML115 G5 are PWM or not.

When I first received my server the fans were really really noisy! I think this is to do partly with the weather but I could do with quietening them
I don't have an ILO card in it which some posts suggests can make them go full speed constantly without a firmware update.

I tried buying a replacement PWM fan but the connector is different. Instead of having a notch at each side like the stock fan, it has a notch 3 pins in which doesn't fit....which makes me think the stock fans are not PWM?

Can someone please help?

Thank you!