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Noctua Nf-a4x20 40x40x20mm Flx 40mm 5000 Rpm 14.9 Db(a) Pc Cooling Fan Cooler Fan Radiator Fan Computer Cases & Towers Fan - Fans & Cooling - AliExpress
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Noctua NF-A4x20 12V FLX or PWM, Premium Quiet Fan (40x20mm, Brown) For MeanWell PSU Upgrade - Smith3D Malaysia
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New original MB40202VX 000C A99 4020 24V 1.54W 4CM inverter video recorder silent cooling fan|fan 4020|4020 fan4cm fan - AliExpress
![Time for silent fans upgrade! Waiting for mobo cover to finish printing. I used 2x Noctua 40x20mm fans and 2x SilentumPC 92mm. : r/ender3v2 Time for silent fans upgrade! Waiting for mobo cover to finish printing. I used 2x Noctua 40x20mm fans and 2x SilentumPC 92mm. : r/ender3v2](https://preview.redd.it/exhp0gst7kr61.jpg?auto=webp&s=35020bb2a7fc4e77e55c2679d862f34c8a0a0d46)