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H60i single wire connection


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Going to assume this is the H60 (2018). The SATA is pump power (and the white LED). The single wire is a tachometer for reporting a gross pump speed to the MB. It's meant to go on CPU fan so it will trigger the BIOS warning system if the pump does not send back a signal on power up. However, that warning system can be disabled or a fan connected in its place and the H60 will work whether it is connected or not.
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