Failed repair DS4, fried usbport?

I had problems connecting the controller so I took it appart. At some point I plugged it in a power source without thinking and smelt burnt electronics. Now the controller won’t even flash the led. Could it be that I fried the usb port by pluggind it into power without having it plugged into the motherboard? Or could I have reconnected the usb port to the motherboard the wrong way and fry something on ths motherboard? wich one could it be

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