Raspberry Pi 4 Aluminum Case Adapter for Noctua NF-A4x10 5V PWM
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Adapter for replacing the stock dual 25 mm fans in a Raspberry Pi 4 aluminum cooling case with a quieter Noctua NF-A4x10
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I made this adapter for an aluminum cooling case for Raspberry Pi 4 that I ordered from AliExpress.
The original case uses two small 25 mm fans, but I found them too loud for everyday use. To make the setup quieter, I designed this support bracket so the case can use a Noctua NF-A4x10 5V PWM fan instead.
The goal was simple:
reduce fan noise
keep active cooling
use a higher quality fan with PWM control
This adapter is meant for people who already have this style of Raspberry Pi 4 aluminum case and want a quieter cooling solution.
Notes
Designed for Noctua NF-A4x10 5V PWM
Intended for a Raspberry Pi 4 aluminum cooling case
Original small fans were removed and replaced with a single 40 mm fan solution
PWM control can be used for better noise and temperature balance
Hardware used
Raspberry Pi 4
Aluminum cooling case
Noctua NF-A4x10 5V PWM fan
Print notes
Print in the orientation shown in the photos
PLA should work, but PETG is a better choice if the Pi runs warm for long periods
Assembly
Remove the original small fans from the case
Print the adapter
Mount the Noctua NF-A4x10 fan to the adapter
Install the adapter onto the case
Connect the fan to 5V and PWM control as needed