@Martin_LC 

Hey, I had the same problem with my switch and was also considering these fans, but I found a cheaper solution: installing two PWM controllers with temperature sensors in the factory fans. They cost $3 each. It's definitely quieter now, and if it gets too hot, it will run at full power. The only downside to this solution is that the fan LED lights up yellow and a message appears in the controller, but there's also a way to fix that: adding a capacitor... I'm sending photos of my modification (it's been working like this for a year).

Hi  @Martin_LC 

Thanks for posting in our business forum.

Unfortunately, we do not recommend disassembling the device or attempting to replace any components yourself, as this will void the warranty. Additionally, we will not be responsible for any subsequent product issues that may arise.

  @Hank21 

Hi 

Thank you for the standard warranty reminder, but let’s be honest: if TP-Link actually listened to its users, this hardware modification wouldn't be necessary in the first place.

The issue of loud, constant-speed fans in the Smart/Managed switch series has been a recurring complaint on these forums for years. In my specific case, the switch is currently using only 52W out of its total 384W PoE budget (roughly 13% capacity). The device is barely warm, yet the fans run at maximum RPM as if it were under full thermal load. This noise level is unacceptable for small office or home environments.

What’s even more disappointing is that I fixed this "noise problem" myself using a simple PWM controller with a temperature sensor that costs about $3. It’s a cheap and effective solution. The real question for your R&D department should be: Why hasn't TP-Link implemented a simple firmware update to allow for temperature-based or PoE-load-based fan control?

This is a software-level fix that would solve the noise issue for thousands of customers. Since the "Smart" features of the switch don't actually include smart thermal management, we as users are forced to choose between our ears and our warranty. I chose silence, and as you can see from the feedback, that is what the market actually needs.

Perhaps it's time for TP-Link to start fixing long-standing design flaws instead of just warning users not to fix them ourselves.

Best regards!

Hi  @Klimek 

TP-Link has recognized customers' demand for silent operation. The currently available products are based on older hardware designs, which cannot achieve further noise reduction through software updates.

While this model will also undergo updates and iterations in the future.

Our company does not recommend DIY modifications due to safety considerations, not because we disregard user needs.