How to show and configure NICs from the service console.
Open up the service console on your host.
To get a listing of your installed NICs type:
You can even set the duplex and speed of your NICs, for example you want to set one of them to 100mbs half duplex (why you would do this, I don't know! It would be slower than molasses in January!)type:
esxcfg-nics -d half -s 100 vmnic0
No screen shot provided, but you get the gist!