[Q] Where does Android map USB devices to the apps that handle them?

When I plug a USB device into an Android tablet, the OS has the ability to "know" what app needs to be launched in order to handle it. This is probably based on the VID/PID values that come from the USB device during configuration. But somewhere, Android must be storing the relationship between VID/PID and application. Where is that mapping stored? I've searched and cannot find anything on this topic.

Thanks!