Noctua 40mm brown to black against the downvotes :-) - sorry for SPAM but works like originally : r/FormD
Creality Noctua NF A4x10 PWM 40mm x 10mm Ultra Quiet Silent Fan 12V 3 Pin Premium Cooling Fan for CR 10/CR 10 S5 mini 3D Printer|3D Printer Parts & Accessories| - AliExpress
Free STL file Velocity stack for Noctua 40mm fan NF-A4x10・Object to download and to 3D print・Cults
Noctua NF-A4x20 FLX Lüfter - 40mm
Active M.2 SSD Cooling With Noctua NF-A4x20 Fan - YouTube
ASUS and Noctua to Unveil GeForce RTX 40-series Graphics Card | TechPowerUp