Nowadays, Windows identifies the majority of devices, but there are always devices harder to identify. When that happens you don’t need to get your tools and start unscrewing.
Just open Device Manager and identify the unknown devices.
Then open the device, select the Details tab and look for Hardware Ids property.
There you can get the Device ID and the Vendor ID, which we can look for in PCIDatabase website (http://www.pcidatabase.com/)
The result should be something like this:
Now you can look for the device driver knowing what you’re looking for.