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
The Best Ender 3 (V2/Pro/S1) Fan Upgrades of 2023 | All3DP
STL file ENDER 3 S1 PRO Bottom Plate for FAN Noctua・Model to download and 3D print・Cults
Ender 3 Pro and Duet Maestro Guide Part 5: Upgrades - Not Maintained