Hi @tessierp 
Thanks for posting in our business forum.

The hardware version for this model is V1.0. If there is any questions about this, please refer to the guide:

Unplug the power and try a different outlet. Make sure you have plugged the cables in and firmly. Or it may be a whine due to the loose connection.

If this persists, and you are seriously worried about it, you may contact your retailer to change one and check if this persists.

Hi @tessierp
Thanks for posting in our business forum.

tessierp wrote

  @Clive_A 

 

Hi,

 

All outlets cause the same issues.

OK. Then same issue on the second unit you have?

Hi @tessierp 

Thanks for posting in our business forum.

tessierp wrote

  @Clive_A 

 

I received the second V1.0 of this switch this morning and it has the same coil whine, although a bit higher pitched than the other switch.

 

I'm not sure if this is an issue that only plagues v1.0 of these switches? Do you have a version 1.0 oor 2.0 of this switch @Clive_A ?

It might be normal. Can you describe the sound of it? Video? Or any type of format that can directly give me an idea about how it sounds.

I don't have it unless I borrow one from the warehouse. It would take several days and I am not sure if the warehouse has one in stock and available for me.

In the past, we had some models with different hardware versions which has their power unit changed, the fan (or operating) sound from the power unit was louder than the fan.

Hi @tessierp 

Thanks for posting in our business forum.

tessierp wrote

  @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 the video you hear the sound of the power supplies from both TL-SG3428X-M2 while the fan on both are barely audible. It is quite the opposite with the TL-SG3210XHP-M2 where the power supply is almost silent but the fans can be heard.

 

From what you are saying looks like the v1.0 of the TL-SG3428X-M2 are the ones with the louder power supplies while I will guess v2.0 is quite the opposite and the fan is louder. That is a guess on my part since the I do not have a version two of the TL-SG3428X-M2. Mind you the TL-SG3210XHP-M2 is a version 2.0 but that is a different model.

 

If you could get your hands on a TL-SG3428X-M2 v1.0 from your warehouse it would be much appreciated to really find out if that is really a normal thing and not an actual issue. I wouldn't want to find myself with dying switches a few months down the road.

 

I still haven't tested the switches at load. I am waiting to get a bigger network rack which I will get tomorrow and I am hoping that under load the power supply doesn't get louder.

 

 

I have notified the dev and test team about this. Gonna be a while before the test team can confirm if there is any issue with it or not.

Hi @tessierp 

Thanks for posting in our business forum.

tessierp wrote

  @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

I cannot guarantee this. My initial thought is this is normal. I don't know what the dev, PM and manufacturing managers think about this. If you believe this is a serious problem for your network, you can first return it as you have concerns about this.