Multiple Ethernet Adapters are not detecting

I am trying to connect 2 connections from MAC to two different Switch with RJ45 by using two Apple USB Ethernet Adapters.

But it is detecting only one adapter @system preferences -> network and in ifconfig I can see the interface is en7.

I tried to add another LAN adapter but it is referring to same en7, if I assign IP then it is appending to same en7

another ethernet adapter is not detecting, is this the expected behavior with MacBook or it will detect both the adapters ?

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