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Locking Coupler for Noctua fan extension cables (Molex KK style fan connectors) 3 Pin & 4 Pin — zdjęcie 1
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Locking Coupler for Noctua fan extension cables (Molex KK style fan connectors) 3 Pin & 4 Pin

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A coupler that locks a set of male/female fan connectors together to prevent unintentional disconnection.

Ocena
5 / 5
Polubienia
9
Pobrania
42
Wydruki
1
Wyświetlenia
239
Oceny
1

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Informacje o modelu

Źródło
Printables
Kategoria
Computers
Licencja
Creative Commons — Attribution — Noncommercial

A simple slide-on housing that holds a pair of 4-pin or 3-pin (male & female) fan connectors together, like those found on Noctua fan extension cables, but it should work with most fan extension cables that use the standard Molex KK style connectors. A 6x4 cut-out is present on the bottom face to allow the connectors to be pushed back out easily using a suitable implement, such as a screwdriver.

I designed this part after one of the fans in my PC began exhibiting symptoms of intermittent electrical connection (randomly stopping and then starting up again at full RPM despite the BIOS fan curve being in place). I discovered that the physical connection between the fan and the extension cable that came with it was very loose and the two could be pulled apart with little effort, meaning that even an insignificant vibration or movement could result in the connection breaking. This coupler fits over that connection and prevents it from moving at all, never mind becoming disconnected. Therefore this part may also prove useful as a preventative measure for securing such connections where movement or vibration is anticipated.

I printed mine in PETG on a CORE One at 0.2 layer height with 100% infill.

Update 15/04/2026: I added variants with slightly relaxed tolerances and additional geometry so they behave more like 'clips'. This makes fitting them in situ much easier and increases reliability. They are marked as "(with retention)" in the model files.

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