USB 3.0 laptop port damage?

Anyone experiencing any damage to their USB 3.0 ports on their laptops from powering UNO R3?

An Uno will only draw about 50mA so should present no problem for a USB port. I have been powering Unos from my laptops for years. The problem can come if you have other things connected to the Uno like a motor or other inductive load or high current device.

What is your problem? What did you do?

The problem was detected from Serial.println() output was garbled.
Laptop involved is a Samsung Chromebook Pro, my daily driver which is a couple of years old. The problem was first noticed when I added a Seeed USB Shield to the Uno. I had previously used this shield and had basic writing to the SD card working. I was starting to integrate the Low Latency Datalogger. Up until this point, I had never experience any problems (other than self inflected) with Serial.println(). Removal of the shield did not remove the problem. I eventually connected the Uno to a desktop computer. After which the Serial.println work without a problem.

Conclusion: Pluging and unpluging the USB 3.0 cable into the Samsung in someway damaged the ports. Note: this model charges via the USB. This may have contributed to the problem though the Samsung still charges without problem.

IDK what caused the problem which is why I asked.

Dumb question, did you check to make sure you selected the correct speed for your serial monitor?
That a big leap to go from that to port damage.

Yes. That was one of the many suggestions for diagnosing the Serial.print() problem.

Had to ask.
Still don't think you have enough to say port damage conclusively.
Have you tested it with other devices for data connectivity?
Also, you charge the laptop on the same USB bus that you use to connect the Uno? Are you certain that it uses 5V to charge it when it's connected? I've seen Samsung and Acer do some dumb things with charging cables before.

Perhaps you are right.

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