Surface Pro 4, annoying noise from the back!

1.No fan at all, neither clicking.

As I said I m now having i5 not having that kind of issue.

Its kind a tiny mechanical noise that repeat over and over again.

Very annoying in quiet environment.

2.From the package will see 4 digit number near to the serial number for example lot 1549 meaning manufacturer date 49 week of 2015 ands so on. 

3.i5/4/128  I'm having now.

Take a look this review mention that they call it electrical noise

.http://www.notebookcheck.net/Microsoft-Surface-Pro-4-Core-m3-Tablet-Review.153843.0.html

That is very interesting!  Thank you for that link, too - it is good to see a thorough online reviewer confirm this issue.

I found my lot number, which is 1546.  I wonder how we can confirm that this issue is resolved in lots after this one?  (for example, lot 1549)

You can't.

Its mutter of being lucky I can say.

As I said i had 2 m3 version 1545 and 1549 and both had same level issue with that electrical noise.

You can't.

Its mutter of being lucky I can say.

As I said i had 2 m3 version 1545 and 1549 and both had same level issue with that electrical noise.

Are you saying that for the two m3 versions, one of them was lot 1549? 

It could be that maybe at lot 1549 for the i5 version, something changed in the production

You can't.

Its mutter of being lucky I can say.

As I said i had 2 m3 version 1545 and 1549 and both had same level issue with that electrical noise.

Are you saying that for the two m3 versions, one of them was lot 1549? 

It could be that maybe at lot 1549 for the i5 version, something changed in the production

Yes I had one 1545 and one 1549 both m3 with same issue.

I'm now having 1549 but it's i5/4/128 version and not having that noise.

I suggest getting the i5 rather m3 plus as doesn't deliver any other advantages like better battery life than i5.

I was expecting much more in battery life for low voltage Core M CPU but m3 simple doesn't offer.

I have 2 SP4 i5/8GB/512, pre ordered at launch date without any issues. only heard the fan kicking loud few times when using Premiere.

During normal usage, outlook, browsing, office...I rarely heard the fan.

No electrical noise at all.

I have 2 SP4 i5/8GB/512, pre ordered at launch date without any issues. only heard the fan kicking loud few times when using Premiere.

During normal usage, outlook, browsing, office...I rarely heard the fan.

No electrical noise at all.

This issue is common to m3 version not i5/i7.

Me too not have issue with my i5.

And fan  barely heard them just like you.