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Forum Discussion
ReadyNas Ultra 6 fan header
Morning all, The system fan has been flaky for a while in one of my Ultra 6 boxes so I ordered a Noctua fan based on reading around the forum. Of course I hadn't appreciated the fan I had was 3 pin...
OK, seeking to answer my own question:
There are two system fan headers on My ReadyNas Ultra 6 at the top edge to the side of the large case fan.
I've checked the pins with a meter and from right to left they appear to be:
1. Earth,
2. perm 12v,
3. less than 12v ~ 11 at time of measuring
Using Google I find that 4 wire 12v Noctua fans aligning the connector as per the pic above gives
1: Earth
2: 12v
3: RPM Speed
4: PWM Signal +5V
So that looks to me like it should just work with pin 4 the pulse width modulation pin not connected.
I presume I will get an expected RPM reported back at the web interface based on what the NAS expects it to be from the voltage applied down pin 3
Am I close?
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