[SOLVED] Phanteks PH-F140SP LED case fans

Jan 30, 2019
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I have a Phanteks Ethoo Pro M Case, an ASUS Z390-A Mobo, and 5 PH-F140SP LED case fans. I've connected the fans' 3-pin plugs to mobo's fan headers. but I can't figure what the second wire (coming from the fan) is for, or what it connects to. So I wrote to CS and this was the response I received (verbatum):

The second wire you will able to connect the switch cable inside the fan's package and you will able to turn on of turn off the LED inside the fan .
Any help deciphering their response and resolving this issue would be greatly appreciated.
 

GangstaSlime

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Jan 10, 2015
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Is the second wire directly connected to the fan or is it a separate cord that came with the package? It could just be an extension cord for the 3-pin cord.

As for the CS's response, I think they are talking about connecting the fan to the mobo (like you did) AND connecting it to a fan controller to let you adjust the LED or the speed. (I will say that I'm not super confident with my "deciphering" job :/ The CS person definitely doesn't fully understand your original question to begin with.)
 

GangstaSlime

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Jan 10, 2015
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If the fans work without anything plugged into the mystery wire, than it's probably an extra bay so that you could plug in a second fan (having 2 fans share 1 mobo header). It could also be a contact point for a fan controller.
 

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