Mike,
thanks a lot for citing me in your review.

According to that link, you still need tachyometry on pin 3 after bridging 1 and 2. HFat you are right, I'll try with a 3 pin fan and see if the server remain on. This is bad design on HP's part since I suspect the system would run fine with an external fan (or even without any fan) in an emergency...

I'd ordered a Scythe S-Flex to replace the system fan, but unfortunately the system requires a fan to be installed using a 4-pin connection (I don't know if the fan must support PWM) or else it powers down in less than a minute and I don't have an appropriate converter at hand. I'll try running the...