Thanks John. It looks like the expansion Intel NICs are being picked up as vmnic0 and vmnic1. It is the integrated Broadcom NICs that are not assigned, you are correct those are 5720s. That is supported by ESXi 5.0 ( www.vmware.com/.../detail.php ) with the tg3 driver. You can get that from my.vmware.com/.../details. Are you able to install it from there and then utilize the NICs?
Hello All, I have a brand new R420 that is running ESXi 5.0 623860.  This server has an additional NIC (Intel) with 2 ports on it.  ESXi is only seeing the 2 onboard NICs and not seeing the expansion card.  I am assuming it is a driver issue, but I am having difficulities installing drivers on the server.  What exactly do I need to do to get this server to see the additional NICs.   Thank you, John
R420 - ESXi 5.0 - Missing NICs