Uploaded December 2021 | Updated September 2026, 5 days ago

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Decided to to make my HP Procurve 1800-24G J9028A rack switch more quiet by just swapping the fan, well turns out that it wasn't quite that easy.

Also the fault led now blinks since it thinks the fan is broken due to different RPM, will look for a solution for that later.

Files available here:
thingiverse.com/thing:5162932
youmagine.com/designs/hp-procurve-40mm-noctua-fan-adapter

Re:upload as the previous one had audio issues.

Fan info:

original fan ( TA150DC C34635-57 ) had a CFM of 5.0
A4x20 has a CFM of 5.5
the original has a ball bearing and A4 has a hydrodynamic bearing likely the main reason why its more quiet
static pressure of the original fan is 1.52mm H₂O
A4x20 has static pressure of 2,26 mm H₂O