@Clive_A Thanks for the info. I'll have to wait and see if the coil whine gets worse. For now it seems stable. If I decide to RMA the switches, could you provide the link for Canada? Thanks for your...

@Clive_A You say they come from another batch. By any chance, is it possible what they tested with were version 2.0 of the switches? Mine are version 1.0. Any chance you could ask your team?

@Clive_A Hello, The serial numbers of both switches are 22396L7000115 and 22396L7000009. Both of them produce the same coil whine sound. If your team judges this isn't normal, I probably will ask for...

@Clive_A The noise itself is manageable. Just want to make sure the noise doesn't hide a power issue and then face a dying power supply. Let me know what your team thinks, I will be waiting. Thank...

@Clive_A Sounds good and much appreciated. Do you know approximately how much time before we can get an answer? Are we talking a week or two? Thanks

@Clive_A I just made a video. You will see two TL-SG3428X-M2 switches on top and one TL-SG3210XHP-M2 at the bottom. They are not mounted yet as I am still debating if I should keep them on not. In...