Depending on the type of network card, they may or may not be automatically added to the hardware.
When adding network cards, there are three cases that are handled in 2 different ways.
It is automatically added to the hardware as it cannot be extended.
Since the adapter can be unplugged and plugged into another device, multiple devices can have the same MAC address, that of the adapter and not the device itself, which can cause inconsistencies. Therefore, USB network cards are not automatically added to the hardware.
For example from Dell, is a special case and is therefore not treated the same as a USB adapter, because it only works with pass through. This means it is only an extension of the built-in network card and does not have its own MAC address. The address is only forwarded from the actual network card. This is automatically added to the hardware.