MacBook Pro 2018 - buzzing noise

This YouTube "video" is the best illustration I have seen to date. The maker says that the sound correlates with WRITING to the SSD.

SSD drives are NOT SILENT. SSD M.2 Toshiba & Samsung EVO 850 making high pitch noise or crackling/whirring

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Hey just want to let you know I have the EXACT same noise coming from my Thunderbolt 3 port. I have spoken to a nice Senior Adviser by the name of Jorge and he has made me rule out (so far) any software issues. We have booted the computer in safe mode, shut it down, reset the SMC and NVRAM. We ran the diagnostics test and returned no error.

I have the 2018 13" 256GB 16GB RAM model running 10.14.3 (18D109) macOS Mojave.

This happened about 2 weeks ago, I sent it in to the repair center with the noise described to them and they had me send my laptop into the repair center to get it checked out. The repair tech told me that the sound could not be replicated and they tried every test and ran diagnostics and said my computer was fine and I received it this past Tuesday (two days ago). The very same night it came back the noise happened again.

I currently have had the computer on constantly with light web browsing, email checking and word processing (Microsoft Word) and it is connected to my external display via USB-C to DisplayPort. This connection is exactly where the sound is coming from.

I have since emailed Jorge, uploaded a video of the sound to the gigafiles.apple.com link they provided, and left a voicemail on his personal extension.

Have you figured this issue out or has any Apple Tech told you what it was? I am very curious and they told me I was the only one with this issue (that they had known of). I understand there are a lot of devices out there.

I was starting to go crazy thinking I am the only one with this problem! Thanks for the reply.

Have you heard of anyone else having this problem? Did you ask them about replacing your laptop? My primary concern is that once my laptop is out of warranty and not covered it will potentially cause harm. This does not sound like "normal working noise" at all. To me personally this is unacceptable for an Apple product.