Help Configuring a Network Adapter on VE Host

I've got several adapter cards on my Proxmox server. They're all showing up in the datacenter server view under my host server in the network settings. That much is good. The first NIC is getting an IP address from the DHCP server but the second is not. I've got a total of 6 NICs on this server. Two of them are plugged in and show physical link lights on the cards. Of those two, one is not getting an IP address.
I have two challenges:
1. How to identify the card in Proxmox that has a...

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