that was a little confusing to read.
I am not quite following what you are saying.
Since this thread seems to be going nowhere and I'm not getting the right information, I guess I can just answer your question directly then.
Your initial post is confusing as well, since there is no such thing as a non-external USB hub that gets external power.
(meaning what you are saying is that you had an internal PCIe card with USB ports on it, and you plugged external power into it)
If this is not what you were saying, then you need to word things better.
If what you were trying to say is that you had a PCIe USB hub, and it fried due to a power surge (which makes no sense to me since your PC power supply should protect against that) and you instead want to get an external USB hub that plugs into a USB port on the PC, then the next thing in your original post was that you are worried about it getting power surged.
If it is the kind that you plug a power adapter into for helping to power USB devices while they are all connected to a single USB port on the PC, then yes, you run the risk of a power surge killing it.
However, that isn't an issue if you are plugging it into a surge protector power strip (which you should always be doing with any of your PC hardware)
If all you plan to connect to the hub are:
Wi-Fi/Bluetooth combo device
Web Camera
And USB micorphone, then you may not need to get a USB hub that plugs into the wall for external power since the USB port on your PC should be able to deliver enough power for those things by itself (as long as it's not super old and USB 2.0. and it would be best if you had a 3.1 port you could use)
Otherwise, if you plan on plugging more into the hub, and even things like controllers and charging docks for controllers, then you will need to get one that plugs into a wall for external power, and to help protect against any power surges in your home, make sure to use a surge protector.