I ran into a series of issues with my MBP yesterday which are very concerning. I have a 2017 15" tbMBP, which has been reliable for me thus far up until yesterday. I have a few external HDDs and SSDs hanging around that I use to move things around, including a Samsung 1TB T3 SSD and a Lacie Porsche Design 2TB HDD. Yesterday, I was copying contents from the Lacie drive to my local MBP drive, and I plugged in the power cable during the transfer since I was running low on power. Instantly when I plugged in the power cable, the transfer stopped and I got a bunch of screen prompts about not safely removing my drive. After that moment, my HDD is completely dead. It won't turn on (indicated by the power light), it won't mount, and it's completely unusable. I've tried numerous different cables and on different laptops, and the drive is dead. I chalked it up to just a failing HDD. It is about 2 years old, so I thought maybe I just got unlucky. It was working flawlessly earlier in the day. Then, I plugged in my Samsung T3 SSD to test things out. At first, it worked fine. I tried using it later in the day, and the drive is now also dead. Same symptoms. The SSD won't power on (no blue light), its not recognized on a Mac or Windows laptop, and I've tried like 3 different cables. Now, it seems like something is up with my MBP that is actually killing my drives. I think it's related to the USB-C ports on the left side of my machine. That's when I've noticed both drives have stopped working completely. I refuse to plug in another drive as it will kill that one as well. I was testing the ports using a USB-C to Lightning cable my plugging in my iPhone XS Max and also noticed something strange. If I plug in just the USB-C to Lightning cable, my iPhone charges fine. The moment I plug in the power cable to the MBP, my iPhone stops charging, even though it's plugged into another USB-C port. I think there's some kind of electrical failure in my MBP, probably related to the logic board. I found one YouTuber with a similar issue, but aside from that haven't found anyone with the same experience. Has anyone else ever heard of this? I will probably be making a trip to the Apple Store soon to see what the issue is.