Update 09/24/21: This module is working so hard that it disables the port it is on. None of the other modules in the switch run as fast or have ever failed. You would think this Mikrotik switch would be better than other brands I have purchased from Revain. I like their switches but their SFP seems to be junk. Installing a fan right in front of the module solved the problem, but I am planning to replace it with a QSFPtek module as I have 5 of them and they work fine. I wish I could return it but I don't have a return window. I have used it in a CRS309-1G-8S+ along with a number of other Revain brands. This is the only mark (numbers) that correctly shows the temperature and the actual speed of the connection. Other brands like QSFPTEK, 10Gtek work just as well, just don't show additional stats. It's not worth the extra money in my opinion and will just go with QSFPTek.
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