Question Internal connectiion for USB port on laptop ?

Feb 2, 2021
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Laptop model: Acer Nitro AN515-42-R5ED

My usb 2.0 stopped working all of a sudden and when i went to open my laptop i saw this: https://drive.google.com/file/d/1IfF_KYA3jyf-IZPnXbt5qDNhI0XveAu6/view?usp=drivesdk
The SATA cable for the usb thing is not plugged in, so i tried to plug it in, but then I'm pretty sure a yellow light showed up and then i semi-burned my finger not really though.
It started to smell a tiny bit like smoke as well. so how do i specifically plug it in, or doesn't it matter?
 

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