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40mm fan bracket for MikroTik CSS326 Switch
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I lowered operating temperature of MikroTik CSS326-24G-2S+RM from 70°C to 37°C by adding a Noctua Fan with this bracket.
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
This is a custom-designed 3D printed bracket to add a Noctua NF-A4x10 24V PWM fan into the MikroTik CSS326-24G-2S+RM Cloud Smart Switch.
With this mod, I successfully reduced the operating temperature from around 70 °C down to 37 °C, greatly improving thermal stability and extending component lifespan.
Print settings:
- Material: PETG (recommended for heat resistance)
- Layer height: 0.2 mm
- Infill: 15% (works well, keeps it lightweight)
- Supports: No support needed
Wiring can be easily routed and powered via the internal 24 V line (soldering required).
The Noctua fan can be fixed using the included anti-vibration silicone mounts.