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Old 11-09-2017, 01:33 AM
ffcm ffcm is offline
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Default H115i connectors

Hi, I noticed a fan-like connector coming from the pump unit that has only one wire.

I also found a lot of people saying a lot of different things about it.

The wire connects to the pin used for the tachometer read. So, is it for reading pump speed or fans speed?

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Old 11-09-2017, 06:40 AM
snapper69 snapper69 is offline
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The single pin connector should be connected to the cpu fan header, it is purely to tell the motherboard that there is a fan there and therefore to allow the computer to boot.
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Old 11-09-2017, 06:44 AM
c-attack c-attack is offline
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As above, with the side effect of reporting half the pump speed to the BIOS and other monitoring programs. Use Link to change pump or fans speeds, not the BIOS.
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connector, fan, h115i, pump, speed

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