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Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics
![Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics](https://m.media-amazon.com/images/I/51MyvtSsQUL.jpg)
Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics
![Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics](https://m.media-amazon.com/images/I/51DtnpZhllL.jpg)
Amazon.com: 2X Quiet Version Fans Compatible for Ubiquiti USG-PRO-4 Unifi Security Gateway Pro. (18dBA Noise) : Electronics
![USG Pro 4 fan noise. Upgraded to Noctua NF-A4x20 and now there is day and night difference! : r/Ubiquiti USG Pro 4 fan noise. Upgraded to Noctua NF-A4x20 and now there is day and night difference! : r/Ubiquiti](https://preview.redd.it/vc0yp1dgz5r31.png?width=1284&format=png&auto=webp&s=2310705b086fcf1319c1c275076067be44ce737b)