Just upgraded the mainboard fan, to a Noctua NF-A4x20. Have gone from rattly jet engine to a whisper, no soldering connectors either which was a nice bonus! : r/MPSelectMiniOwners
NF-A4x10 FLX
Noctua Premium Fan Review: Closer Look - Fans - Noctua NF-A Fan Series Features Roundup - Page 3
NF-A4x20 FLX 12V 5000RPM 40x20mm Quiet Cooling Fan
Noctua NF-A4x20 Fan - 3DJake International
Fan grill for noctua 40x40 by KalleKnall | Download free STL model | Printables.com