Question Dual system...Pump (system 2) always on when system 1 selected.

Aug 11, 2021
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Dual system powered by a Revolt X 1200W PSU. This powers both systems in same case. Either system is independently switched using power and reset buttons.
Problem.....System 2 is liquid cooled. The pump is molex powered. Molex cables (and Sata) are always on regardless of system selected.
This means system 2 pump is always running EVEN when it is not on. This is annoying and noisy and not wanted.
I propose a motherboard powered relay where the contacts are in-line with the 2 molex power cables for the pump. This means the relay coil would need to be motherbord (system 2) powered so it only operates when system 2 powered up.
Is this something anyone here has com up against? Help....regards
 

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