Linux doesn’t have a Device Manager or database like Windows does. It automatically picks the appropriate drivers for the hardware in the system when it boots, based on what drivers are installed. And as others have mentioned, most distros ship generic kernels with all the open-source drivers included.
Yeah, it confused me at first, but now I love it and never want to have to go back to dealing with Device Manager freaking out if I need to move a drive or swap out hardware.