Upgrading Ender 3 Fans with Noctua 40x20 for Quieter Printing - YouTube
Ender 3 (Pro & V2) Silent Fan Upgrade Guide with Pictures – 3D Solved
PSA: When ordering new, quiet fans for your printer from Noctua, please note there is a small difference between NF-A4x20 and NF-A20 ... Ooops : r/3Dprinting