CBS250-16P-2G transformer noise

[brendan]

I just deployed a CBS250-16P-2G in an office environment and the (what I am pretty sure is) transformer noise is pretty bad. Its a continuous high pitched buzz and the users near it are being driven crazy. I am probably going to seek replacement, but I wanted to see what others have experienced with this switch. Do you think I'll have luck with a replacement unit or is this characteristic of the model?

FYI, the PoE workload is minimal.  Total consumption is 10 watts across 3 PoE ports.  

[marce1000]

                                         (replacement is probably advisable)

 Ref : https://www.cisco.com/c/en/us/products/collateral/switches/business-250-series-smart-switches/nb-06-bus250-smart-switch-ds-cte-en.html

 >...

Acoustic noise and Mean Time Between Failures (MTBF)	Model name	Fan (number)				Acoustic noise				MTBF at 25°C (hours)
	CBS250-8T-D	Fanless				N/A				3,277,956
	CBS250-8PP-D	Fanless				N/A				1,659,542
	CBS250-8T-E-2G	Fanless				N/A				2,171,669
	CBS250-8PP-E-2G	Fanless				N/A				1,706,649
	CBS250-8P-E-2G	Fanless				N/A				1,706,649
	CBS250-8FP-E-2G	Fanless				N/A				1,706,649
	CBS250-16T-2G	Fanless				N/A				2,165,105
	CBS250-16P-2G	Fanless				N/A				706,983

[nicktc]

I just bought this switch and have the same thing. Did you return it?

[jimstewart77]

Pretty poor if this is the same for all of them.  Hoping we will get some people pop up and say they dont have issues.  I have an 8P which is completly silent (and I am generally sensitive to switchihg PSU noise).  I have considered if one day I will need to swap to a 16.  .