If you help fix people’s computers you will come across devices that windows will not have drivers for or you may be having problems downloading them from the machine manufacturer site, here is a quick way to go about it.
Go to Device Manager right click on unrecognised device there will be an exclamation mark on it click Properties ->Details and select Hardwae ID’s from the property drop down list. VID_ and VEN_ are used to identify vendors and PID_ and DEV_ identify Product ID. The HEX value following Product ID “PID_/DEV_” or Vendor ID “VID_/VEN_” is what you use in your search to identify the device.
Now go to pcidatabase.com enter your product or vendor id to such for your device.