credit of pic you posted goes to Cass who found the pinout. the AW 5 pin is only 3 pin too: 1/5 is blank, 2/5 are jumped.  the liquid pump is never meant to be PWM.  it is supposed to run at a constant rpm.  again, if I was wrong, Cass may correct me. Re: the open system vent when fans reach XXX% does not seem to control them. Like the fans will be at like 5-10% but the fins stay at the middle open setting. that is a question of how to use AWCC.  it seems the active vent is not as responsive to fan speed as you wished.  I suspect the feature you wished to have is more app dependent than fan %.
Hello I have an Alienware Area-51 R1 (warranty expired in December 2010). My problem is I cant get the fans to move due to problems with the fans being controlled. For some reason in HW monitor the FANIN0 is normal 800-900rpm idle and the system is running at normal fan speeds but the reported fan pwm is running at 100%. I originally thought this would be fixed after replacing the aio it had (the pump died). I did make an adapter for a regular 3 pin to the dell 5pin and it works fine. But the fans still report as being at 100% im not sure what to do everything works fine except for this. Im happy to answer any further questions that might help you understand my issue. Im adding some pictures of the fans in both alienware control center and HW monitor. Hopefully someone knows whats up. PS im on windows 10   [IMAGE]HW monitor[IMAGE]AlienFX notice the pump is recognized
Area-51 R1, MIO fan issue