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Old 12-14-2018, 03:05 PM
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DevBiker DevBiker is offline
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Join Date: Feb 2017
Location: Republic of Texas
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POST ID # = 985392
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It turns off when it doesn't get any power. That should happen at shutdown. The motherboard needs a separate setting for that because it will still get +5V power on standby. But a SATA device doesn't need that.

So yes, I would look at your PSU. Somehow, the cooler is getting power on the SATA +5V rail. If your PSU is shut off at the switch, that shouldn't be happening. If it's unplugged, that really shouldn't be happening.
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