PSA: If your Ender 3 has an S-360W-24-L PSU and its pretty loud, check the fan voltage. They are sometimes using 12/14V fans running at 24V! : r/ender3
Silencing a Loud 3D Printer Power Supply – Clever Creations
Ender 3 V2 PSU Cover flat bottom 92mm Fan by maker4fun | Download free STL model | Printables.com
How to Upgrade Your Ender 3 Power Supply to a MeanWell PSU - Howchoo
3D Printable Ender 5 External support for PSU LRS-350 series - MEAN WELL by Manuel Schréder
Free STL file Ender 3 Power Supply Mod for 60mm Fan・3D printable design to download・Cults
Replacing the Power Supply Fan on the Ender 3 - YouTube
Ender 3 120mm PSU Mod Fan Cover with Buck | 3D model | Thangs