By the way, and because it might be of general interest here. It is not unusual for USB and other chips to be damaged and the motherboard is still fine.
The reasons for this are really quite simple. Most modern switched power units have at least fairly primitive surge protection. External surge protection devices are of course better. So if you use a surge protection device for your machine, then that provides more safety.The better the surge protection device, then the better the protection,.
However, many people use surge protection devices for their main machine, and use plug in "Adapters" to power their external devices like USB drives, printers etc.
The transient spike(s) which kills the chip(s), comes through this path, and only kills the chip, not affecting the motherboard itself.
If you use surge protection, which is a very good idea!
It is only fully effective if you have it on ALL devices connected to your machine.