Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown)

I went with the Noctua NF-A4x20 in 5V because I wanted a clean USB-powered setup—no sketchy wiring hacks. It’s a quality 40mm fan that fits the shroud nicely, and it’s a straightforward way to add airflow inside an enclosure. Just pay attention to airflow direction when you mount it.

Pros

+5V makes USB power simple
+Reliable, premium build quality
+40mm size matches the printed mount

Cons

-You may need an adapter cable to power it from USB
-May require a shim/adapter to remove gaps depending on your shroud

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Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown)

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Highlights

+5V makes USB power simple
+Reliable, premium build quality
+40mm size matches the printed mount

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