MikroTik Switch Noctua Fan Mod - Check Out The Temps!

Running a fanless 10Gbe switch with RJ45 transceivers and want lower temps? Check this out...

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Affordable 10Gb Networking for the Home! - MikroTik CRS309 - https://youtu.be/BRXFzUut-0o

In this video we'll be taking a MikroTik CRS309-1G-8S+ and modding it by adding Noctua fans to it to assist with cooling. A nice feature of the MikroTik CRS309 is that it is a fanless switch which is perfect for most situations in a HomeLab network. What can be bad is if you are using multiple RJ45 SFP+ transceivers, the transceivers can get very hot while the switch CPU stays cool. Typical fiber optic SFP+ transceivers stay cool, but not S+RJ10 transceivers used with copper ethernet cables. 10 gigabit ethernet networking can make your home network much faster, but you need to be aware of the options available.

Using 5V Noctua fans NF-A4x10 we'll be able to place them directly on top of the transceivers, reducing the temperature well under their rated temp and possibly extending their life. MikroTik does not recommend running RJ45 transceivers side by side, rather keeping them spaced apart. This unfortunately turns the 8 port SFP+ switch into a 4 port 10Gbe switch. Adding fans will allow using all ports for 10 gigabit RJ45 networking. The 40mm Noctua fans have a rated airflow of 4.83 CFM with a static pressure of 1.78 mm/H2O. They are also very quiet at only 17.9dB. The Noctua fans will be powered from a 5V USB port on a power strip that's plugged into the server rack UPS battery backup, so in case of a power outage the fans will continue to cool the switch. ... https://www.youtube.com/watch?v=ZDTv6NGBhYk